Lenovo Thinksystem Sr250 Server User Guide

Lenovo ThinkSystem SR250 Server

Lenovo ThinkSystem SR250 is an affordable, single-socket 1U rack server for small and medium businesses that need optimized performance and flexibility for future growth, along with enterprise-class reliability, management, and security. The SR250 server offers a wide range of processors — from Intel Celeron to Intel Xeon E Series. With support for a memory capacity of up to 128 GB and internal storage of up to 32 TB, the SR250 server is an ideal choicefor small- to medium-sized business, workgroups, distributed locations, and web-scale workloads. Flexible and scalable internal storage configurations include up to ten 2.5-inch or four 3.5-inch drives with affordable software RAID or advanced hardware RAID protection and a wide selection of drive sizes and types, including NVMe PCIe SSDs, SAS/SATA SSDs, and SAS/SATA HDDs. Also, it features integrated dualport 1 Gb Ethernet NIC and additional PCIe expansion slots for hardware RAID protection, network scalability, and external storage connectivity. The next-generation Lenovo XClarity Controller, which is built into the SR250 server, provides advanced service processor control, monitoring, and alerting functions. The following figure shows the Lenovo ThinkSystem SR250.

Did you know?
The SR250 server offers enterprise-class reliability features such as error correcting code (ECC), hot-swap components, and advanced RAID protection with flexible storage options at an affordable price. The SR250 server has a mere 19.6-inch (498 mm) deep chassis, helping customers reduce their business footprint. The SR250 server offers performance, energy efficiency, and serviceability features, such as NVMe PCIeSSDs, 80 PLUS Gold and Platinum certified power supplies, and easy access to upgrades and serviceable parts (such as memory DIMMs and adapter cards), which is not typically found in the single-socket value servers. The SR250 server offers easy-to-use, enterprise-class manageability to monitor server availability and perform remote management with the built-in Lenovo XClarity Controller.

Key features

The SR250 server is a compact, cost-effective, single-processor 1U rack server that has been optimized to
provide enterprise-class features to small-to-medium-sized businesses, retail stores, or distributed enterprises.
Scalability and performance
The SR250 server offers numerous features to boost performance, improve scalability, and reduce costs:

• Improves productivity by offering superior system performance with the Intel Xeon E Series processors with up to 6 cores, up to 16 MB of last level cache (LLC), up to 2666 MHz memory speeds, and up to 8 GT/s bus speed.
  • Choice of processors with up to 6 cores and up to 16 threads to enable the effective use of multithreaded applications.
  • Intelligent and adaptive system performance with energy efficient Intel Turbo Boost 2.0 Technology allows CPU cores to run at maximum speeds during peak workloads by temporarily going beyond processor thermal design power (TDP).
  • Intel Hyper-Threading Technology boosts performance for multithreaded applications by enabling simultaneous multithreading within each processor core, up to two threads per core.
  • Intel Virtualization Technology integrates hardware-level virtualization hooks that allow operating system vendors to better utilize the hardware for virtualization workloads.
  • Intel Advanced Vector Extensions (AVX) enable acceleration of enterprise-class and high performance computing (HPC) workloads.
• Provides memory speed, availability, and capacity of up to 128 GB memory with up to four 2666 MHz DDR4 ECC UDIMMs.
• Offers flexible and scalable internal storage in a 1U rack form factor with up to 10x 2.5-inch drives for performance-optimized configurations or up to 4x 3.5-inch drives for capacity-optimized configurations, providing a wide selection of SAS/SATA HDD/SSD and PCIe NVMe SSD types and capacities.
• Provides I/O scalability with the onboard LOM interface and up to three PCI Express (PCIe) 3.0 I/O expansion slots in a 1U rack form factor.
• Reduces I/O latency and increases overall system performance with Intel Integrated I/O Technology that embeds the PCI Express 3.0 controller with 16 lanes into the processors.

Availability and serviceability

The SR250 server provides many features to simplify serviceability and increase system uptime:

• Offers ECC protection which provides error correction not available in PC-class “servers” that use parity memory.
• Provides easy access to upgrades and serviceable parts (such as memory DIMMs and adapter cards) with tool-less cover removal.
• Offers data protection and greater system uptime with a choice of affordable onboard SATA RAID or advanced hardware RAID redundancy, along with hot-swap drives (select models).
• Provides availability for business-critical applications with redundant hot-swap power supplies (select models).
• Allows preventive actions in advance of possible failure, thereby increasing server uptime and application availability with Proactive Platform Alerts (including PFA and SMART alerts) for memory, internal storage (SAS/SATA HDDs and SSDs, NVMe SSDs, M.2 SSDs), RAID controllers, and server ambient and sub-component temperatures.
• Continuously monitors system parameters, triggers alerts, and performs recovery actions in case of failure to minimize downtime with Built-in XClarity Controller (XCC).
• Provides quick access to system status, firmware, network, health, and alerts information via Virtual Operator Panel from the XClarity Mobile App running on the Android or iOS mobile device that is connected to the front USB port with XClarity Controller access.
• Speeds up troubleshooting tasks to reduce service time with diagnostics built into the XClarity Provisioning Manager.

Manageability and security
Powerful systems management features simplify local and remote management of the SR250 server and deliver enterprise-class data protection:

• Provides advanced service processor control, monitoring, and alerting functions with XClarity Controller, a next generation service processor.
• Improves Unified Extensible Firmware Interface (UEFI) system setup, configuration, updates, simplified error handling, and operating system deployment with the embedded XClarity Provisioning Manager.
• Offers XClarity Essentials software tools that can help customers set up, use, and maintain the server.
• Increases uptime, reduces costs, and improves productivity through advanced server management capabilities with Lenovo XClarity Administrator that provides comprehensive hardware management.
• Provides on-the-go monitoring and management of devices in XClarity Administrator from anywhere with the Lenovo XClarity mobile app, which can help improve efficiency and reduce downtime risks.
• Centralizes infrastructure resource management with Lenovo XClarity Integrators for VMware vCenter and Microsoft System Center, extending XClarity Administrator features to virtualization management software tools and enabling users to deploy and manage infrastructure end-to-end.
• Offers advanced cryptographic functionality (such as digital signatures and remote attestation) with an integrated Trusted Platform Module (TPM) or optional Nationz TPM (available only in PRC).
• Keeps user data safe with Lenovo Business Vantage, a security software tool suite designed to work with the Nationz Trusted Platform Module (available only in PRC).
• Establishes a solid security foundation for workloads by delivering firmware that is securely built, tested, digitally signed, and verified prior to execution.
• Offers enterprise-class data protection with advanced RAID and optional self-encrypting drives.
• Provides faster, stronger encryption with industry-standard AES NI support.
• Helps prevent certain classes of malicious buffer overflow attacks with Intel Execute Disable Bit functionality, when combined with a supporting operating system.
• Enhances security through hardware-based resistance to malicious software attacks with Intel Trusted Execution Technology (Xeon E Series processors only), allowing an application to run in its own isolated space, protected from all other software running on a system.
• Helps prevent unauthorized software from running on the server by protecting against boot block-level malicious software with Intel Boot Guard technology.
• Protects application code and data from disclosure or modification with Intel Software Guard Extensions (SGX), enabling high-assurance security use cases, such as blockchain, identity and records privacy, secure browsing, and digital rights management (DRM).

Energy efficiency
The SR250 server offers the following energy-efficiency features to save energy, reduce operational costs, increase energy availability, and contribute to the green environment:

• Delivers optimized compute power per watt, featuring 80 PLUS Gold (fixed) and Platinum (hot-swap) AC power supplies.
• Reduces power drawn with Intel Intelligent Power Capability that powers individual processor elements on and off as needed.
• Helps reduce power consumption with variable speed fans.
• Helps achieve lower heat output and reduced cooling needs with Lenovo XClarity Energy Manager that provides advanced data center power notification, analysis, and policy-based management.

Components and connectors

The following figure shows the front of the SR250 server with four 3.5-inch drive bays.

The following figure shows the front of the SR250 server with eight 2.5-inch drive bays.

The following figure shows the front of the SR250 server with ten 2.5-inch drive bays.

The front of the SR250 server includes the following components:

• Drive bays:
  • 4x 3.5-inch (Large Form Factor [LFF]) SATA simple-swap; or
  • 4x 3.5-inch SAS/SATA hot-swap; or
  • 8x 2.5-inch (Small Form Factor [SFF]) SAS/SATA hot-swap; or
  • 10x 2.5-inch hot-swap drive bays:
  • 10x SAS/SATA
  • 8x SAS/SATA and 2x NVMe PCIe
• One VGA port (optional)
• One USB 2.0 port with XClarity Controller access
• One USB 3.1 Gen 1 port
• A Power button
• Status LEDs

The following figure shows the rear of the SR250 server.

The rear of the SR250 server includes the following components:

• Up to two PCIe expansion slots (depending on the riser cards selected)
• One 1 GbE port for XClarity Controller
• One RS-232 serial port
• One VGA port
• Two 1 GbE data network ports
• Two USB 3.1 Gen 2 ports
• Power supplies
  • Up to two hot-swap power supplies; or
  • One fixed power supply

The following figure shows the locations of key components inside the SR250 server.

The SR250 server includes the following internal components:

• One processor
• Four DIMM slots
• Up to three PCIe 3.0 slots:
  • Slot 1: PCIe 3.0 x8 (not present if the Slot 2 is PCIe x16)
  • Slot 2: PCIe 3.0 x8 or x16
  • Slot 3: PCIe 3.0 x4 (only supports a controller for internal storage)
• Eight onboard SATA ports:
  • One Mini-SAS HD connector (4x SATA x1 ports)
  • Four SATA connectors (each connector provides the SATA x1 port)
• One TCM/TPM connector (supports Nationz TPM available in PRC only)
• Drive backplanes:
  • 4x LFF SATA simple-swap bracket; or
  • 4x LFF SAS/SATA hot-swap; or
  • 8x SFF SAS/SATA hot-swap; or
  • 8x SFF SAS/SATA and 2x SFF AnyBay hot-swap
• Four non-hot-swap system fans
• One M.2 connector

Standard specifications

The following table lists the system specifications for the SR250 server.
Table 1. SR250 system specifications

Models
ThinkSystem SR250 models can be configured by using the Lenovo Data Center Solution Configurator (DCSC). Configure-to-order (CTO) models are used to create models with factory-integrated server customizations. For CTO models, two base CTO models are available for the SR250 as listed in the following table, CTO1WW and CTOLWW:

• The CTO1WW base CTO model is for general business and is selectable by choosing General Purpose mode in DCSC.
• The CTOLWW base model is intended for High Performance Computing (HPC) and Artificial Intelligence (AI) configurations and solutions, including configurations for Lenovo Scalable Infrastructure (LeSI), and is enabled using either the HPC & AI LeSI Solutions mode or HPC & AI Hardware mode in DCSC. CTOLWW configurations can also be built using System x and Cluster Solutions Configurator (x-config).

Preconfigured server models may also be available for the SR250, however these are region-specific; that is, each region may define their own server models, and not all server models are available in every region. The following table lists the base CTO models of the ThinkSystem SR250 server.
Table 2. Base CTO models

For customers in India, additional machine types are available as listed in the following table.
Table 3. CTO base models for India

The following table lists the base chassis for CTO models of the SR250 server.
Table 4. Base chassis for CTO models

All models of the SR250 server are shipped with the Electronic Publications Flyer.
Models table conventions: The model tables shown in this section use the following conventions:

• Drive bays:
  • If the number is shown as “x”, it represents the quantity of the SAS/SATA drive bays.
  • If the number is shown as “x+y”, it represents the quantity of the SAS/SATA + NVMe drive bays.
• XClarity Controller: “S” = Standard, “A” = Advanced, “E” = Enterprise.
• Front VGA port: “Y” = Included; “N” = Not included, optional.
• Tool-less 4-Post Rail Kit: “Y” = Included; “N” = Not included, optional.
• Power cord:
  • “R1” = 1.5 m C13-C14 rack power cable.
  • “R2” = 2.8 m C13-C14 rack power cable.
  • “L2” = 2.8 m line cord.
  • “N” = Not included; see Power supplies and cables for the ordering information.

The following tables list the models of the SR250 server for the following regions:

• North America
• Brazil
• Latin America (except Brazil)
• Europe, Middle East, and Africa (EMEA)
• India
• Hong Kong, Taiwan, Korea
• Japan
• Association of Southeast Asian Nations (ASEAN)
• Australia and New Zealand

Table 5. SR250 server models (3-year warranty): North America

Processor details: Processor quantity and model, cores, thermal design power (TDP), and core speed.
^ The server supports one fixed power supply or up to two hot-swap (HS) power supplies.
† Configured in a RAID-1 drive group; ships with the Windows Server 2019 Essentials – English factory preload.
‡ Configured in a RAID-1 drive group; ships with the Windows Server 2019 Standard (16 core) – English factory preload.
Table 6. SR250 server models (3-year warranty): Brazil

* Processor details: Processor quantity and model, cores, thermal design power (TDP), and core speed.
^ The server supports one fixed power supply or up to two hot-swap (HS) power supplies.

Table 7. SR250 server models: Latin America (except Brazil)

* Processor details: Processor quantity and model, cores, thermal design power (TDP), and core speed.
^ The server supports one fixed power supply or up to two hot-swap (HS) power supplies.
Table 8. SR250 server models: EMEA

* Processor details: Processor quantity and model, cores, thermal design power (TDP), and core speed.
^ The server supports one fixed power supply or up to two hot-swap (HS) power supplies.
Table 9. SR250 server models (3-year warranty): India

* Processor details: Processor quantity and model, cores, thermal design power (TDP), and core speed.
^ The server supports one fixed power supply or up to two hot-swap (HS) power supplies.
Table 10. SR250 server models (3-year warranty): Hong Kong, Taiwan, Korea

* Processor details: Processor quantity and model, cores, thermal design power (TDP), and core speed.
^ The server supports one fixed power supply or up to two hot-swap (HS) power supplies.
Table 11. SR250 server models (3-year warranty): Japan

* Processor details: Processor quantity and model, cores, thermal design power (TDP), and core speed.
^ The server supports one fixed power supply or up to two hot-swap (HS) power supplies.

Table 12. SR250 server models (3-year warranty): ASEAN

* Processor details: Processor quantity and model, cores, thermal design power (TDP), and core speed.
^ The server supports one fixed power supply or up to two hot-swap (HS) power supplies.

Table 13. SR250 server models (3-year warranty): Australia and New Zealand

* Processor details: Processor quantity and model, cores, thermal design power (TDP), and core speed.
^ The server supports one fixed power supply or up to two hot-swap (HS) power supplies.
Processors
The SR250 supports one processor from the Intel product family formerly known by the codename “Coffee Lake-S Refresh”. This includes processors from the Intel Xeon E, Core i3, Pentium Gold, and Celeron G families. The server supports the processors that are listed in the following table.

Integrated graphics and management: Xeon processors with a G suffix include integrated graphics, however, this functionality is not used in the SR250. Instead, graphics support is provided by XClarity Controller (XCC), or by an GPU add-in card. Similarly system management of the SR250 is handled by XCC and as a result, the AMT management processor is disabled.
Table 14. Processor specifications (HT = Hyper-Threading, TB = Turbo Boost, VT = Virtualization Technology)

The following table lists feature codes for the processors that are available for the SR250 server.
Table 15. Processor feature codes

Memory
The SR250 server supports up to 4 TruDDR4 memory UDIMMs with ECC protection. The processor has two memory channels with two DIMMs per channel. Lenovo TruDDR4 memory uses the highest-quality components sourced from Tier 1 DRAM suppliers and only memory that meets strict requirements is selected. It is compatibility tested and tuned on every ThinkSystem server to maximize performance and reliability. TruDDR4 memory has a unique signature programmed into the DIMM, which enables Lenovo servers to verify whether the memory installed is qualified and supported. Lenovo qualified and supported TruDDR4 memory is covered by Lenovo warranty, and service and support provided worldwide.
The following rules apply when selecting the memory configuration:

• The server supports memory configurations with 1, 2, 3, or 4 UDIMMs.
• Mixing UDIMMs of different capacity is not supported.
• All DIMMs in the server operate at the same speed up to 2666 MHz, which is determined by the maximum memory speed supported by the specific processor (see Processors for details).
  Note: Maximum memory speed can be achieved when Max performance mode is enabled in UEFI.
• The server supports up to 128 GB of memory.
  Note: 32 GB UDIMMs are supported only with the Intel Xeon E Series processors; Core i3, Pentium Gold, and Celeron G Series processors do not support 32 GB UDIMMs.

The following table lists memory options available for the SR250 server.
Table 16. Memory options

Internal storage
The SR250 server supports the following internal drive bay configurations:

1. 4 LFF SATA Simple Swap drive bays
2. 4 LFF SAS/SATA hot-swap drive bays
3. 8 SFF SAS/SATA hot-swap drive bays
4. 10 SFF hot-swap drive bays:
   • 10x 2.5″ SAS/SATA
   • 8x 2.5″ SAS/SATA & 2x 2.5″ NVMe PCIe

In addition, the SR250 server models can be configured with one internal M.2 SATA non-hot-swap SSD.
The following figure shows the internal drive bay configurations.

The following table lists the internal storage options for the SR250 server.
X30 and X40 adapters: Some of the kits are for X30 adapters, which correspond to any of the RAID 930, 730, 530 or HBA 430 storage adapters. Some kits are for use with X40 adapters, which correspond to RAID 940 and HBA 440 storage adapters.

Table 17. Internal storage options

Configuration notes:

• The AnyBay backplane allows either SAS/SATA drives or NVMe PCIe drives in the drive bays 8 and 9.
• Configurations with NVMe PCIe drives are supported only for Machine Types 7Y51, 7Y52, and 7Y72; Machine Type 7Y73 does not support configurations with NVMe PCIe drives.
• Field upgrades for models with 3.5-inch drive bays:
  • Models with 4x 3.5″ SS drive bays and an onboard SATA controller can be upgraded to support a hardware RAID controller or HBA by using one of the following:
  • For use with X30 RAID/HBA adapters: 4×3.5″ SS Backplane Bracket Kit for HW RAID/HBA (4M17A80597 or 4M17A14200)
  • For use with X40 RAID/HBA adapters: 4×3.5″ SS Backplane Bracket Kit for HW X40 RAID/HBA (4M17A80601)
  • Models with 4x 3.5″ SS drive bays can be upgraded to support 4x 3.5″ HS drive bays and a hardware RAID controller or HBA by using one of the following:
  • For use with X30 RAID/HBA adapters: 3.5″ HS SATA/SAS 4-Bay Backplane Cable Kit (4M17A80605 or 4M17A13565). The kit includes the hot-swap backplane (BMPX or B412) and the SAS/SATA cable for HW RAID/HBA (B415).
  • For use with X40 RAID/HBA adapters: 3.5″ HS SATA/SAS 4-Bay Backplane with X40 RAID Cable Kit (4M17A80607 or 4M17A80602). The kit includes the backplane and the cable for connecting to the X40 adapters
  • Models with 4x 3.5″ HS drive bays and an onboard SATA controller can be upgraded to support a hardware RAID controller or HBA by using one of the following:
  • For use with X30 RAID/HBA adapters: 3.5″/2.5″ HS SAS/SATA x4 Cable for HW RAID/HBA (4Z57A12652)
  • For use with X40 RAID/HBA adapters: 3.5″/2.5″ HS SAS/SATA x4 Cable for HW X40 RAID/HBA (4Z57A80610)
• Field upgrades for models with 2.5-inch drive bays:
  • Models with 8x 2.5″ HS drive bays and an onboard SATA controller can be upgraded to support a hardware RAID controller or HBA by using two of the following:
  • For use with X30 RAID/HBA adapters: 3.5″/2.5″ HS SAS/SATA x4 Cable for HW RAID/HBA (4Z57A12652)
  • For use with X40 RAID/HBA adapters: 3.5″/2.5″ HS SAS/SATA x4 Cable for HW X40 RAID/HBA (4Z57A80610)
  • Models with 8x 2.5″ HS drive bays and an onboard SATA controller can be upgraded to support 10x 2.5″ HS drive bays and a hardware RAID controller or HBA by using the 2.5″ HS AnyBay 10- Bay Backplane (4C57A80517 or 4C57A12112). The following additional cables are needed:
  • NVMe support: Two 3.5″/2.5″ HS SAS/SATA x4 Cables for HW RAID/HBA (4Z57A12652 for X30 or 4Z57A80610 for X40) and two 10×2.5″ HS NVMe Cables (4Z57A12651).
  • No NVMe support: Three 3.5″/2.5″ HS SAS/SATA x4 Cables for HW RAID/HBA (4Z57A12652 for X30 or 4Z57A80610 for X40).
  • Models with 8x 2.5″ HS drive bays and a hardware RAID controller or HBA can be upgraded to support 10x 2.5″ HS drive bays by using the 2.5″ HS AnyBay 10-Bay Backplane (4C57A80517 or 4C57A12112). The following additional cables are needed:
  • NVMe support: Two 10×2.5″ HS NVMe Cables (4Z57A12651).
  • No NVMe support: One 3.5″/2.5″ HS SAS/SATA x4 Cable for HW RAID/HBA (4Z57A12652 for X30 or 4Z57A80610 for X40).
  • Models with 10x 2.5″ HS drive bays and an NVMe Switch Adapter can be upgraded to support a hardware RAID controller or HBA by using two of the following:
  • For use with X30 RAID/HBA adapters: 3.5″/2.5″ HS SAS/SATA x4 Cable for HW RAID/HBA (4Z57A12652)
  • For use with X40 RAID/HBA adapters: 3.5″/2.5″ HS SAS/SATA x4 Cable for HW X40 RAID/HBA (4Z57A80610)
• Controllers for internal storage are not included with the field upgrade options.
• The M.2 SSD cannot be used in the configurations with eight drives that are connected to the onboard SATA controller (the SATA port 7 is shared between the drive bay 7 and the M.2 connector).

The following table lists supported internal storage configurations with the SAS/SATA and AnyBay backplanes.
Table 18. Internal storage configurations

The number in brackets (x) specifies the quantity of drive bays connected to each of the controllers.

SED encryption key management with ISKLM
The server supports self-encrypting drives (SEDs) as listed in the Internal drive options section. To effectively manage a large deployment of these drives in Lenovo servers, IBM Security Key Lifecycle Manager (SKLM) offers a centralized key management solution. A Lenovo Feature on Demand (FoD) upgrade is used to enable this SKLM support in the management processor of the server. The following table lists the part numbers and feature codes for the upgrades.
Table 19. FoD upgrades for SKLM support

The IBM Security Key Lifecycle Manager software is available from Lenovo using the ordering information listed in the following table.
Table 20. IBM Security Key Lifecycle Manager licenses

Controllers for internal storage

The following table lists the storage controllers and options for internal storage of the SR250 server.
Table 21. RAID controllers and HBAs for internal storage

The onboard SATA controller integrated into the Intel C246 Platform Controller Hub (PCH) supports nonRAID (JBOD) AHCI mode or a hardware-assist, software RAID feature (Intel Rapid Storage Technology
Enterprise [RSTe]).
For a comparison of the functions of the supported storage adapters, see the ThinkSystem RAID Adapter and
HBA Reference:
https://lenovopress.com/lp1288-thinksystem-raid-adapter-and-hba-reference#sr250-support=SR250

Configuration notes:

• The onboard SATA controller does not consume a PCIe slot.
• SAS RAID controllers and HBAs for internal storage are supported in the following PCIe slots:
  • PCIe slot 2 on the PCIe x8/x8 Riser Card (feature code B418):
  • No additional PCIe adapters are installed
  • One additional PCIe adapter is installed in the server in the PCIe slot 1
  • PCIe slot 3 on the system board:
  • Two additional PCIe adapters are installed in the server in the PCIe slots 1 and 2
  • A GPU adapter is installed in the server in the PCIe slot 2
  • The PCIe x16 Riser Card (feature code B417) is installed in the server
• The total quantity of the RAID 730-8i 2GB, 930-8i, 930-16i, and 930-8e controllers in the server must not exceed 1 (up to 1 supercapacitor can be mounted in the server).
• The 1610-4P NVMe Switch Adapter is supported in the PCIe slot 2 supplied by the PCIe x8 or x16 riser card.
• The 1610-4P NVMe Switch Adapter provides two PCIe 3.0 x4 ports for JBOD (non-RAID) connectivity to U.2 NVMe PCIe SSDs in the drive bays 8 and 9.
• The onboard Intel RSTe is not supported by virtualization hypervisors, including VMware vSphere (ESXi), Linux KVM, Xen, and Microsoft Hyper-V.
• The onboard Intel RSTe supports up to eight drives in a RAID-0 or RAID-5 array, two drives in a RAID-1 array, and four drives in a RAID-10 array. In a Windows Server-based environment, the onboard Intel RSTe supports up to six drives in a RAID-0 or RAID-5 array.

For more information, see the list of Product Guides in the following categories:

• RAID adapters
  http://lenovopress.com/servers/options/raid#rt=product-guide
• Host bus adapters
  http://lenovopress.com/servers/options/hba#rt=product-guide

Drives for internal storage

The following tables list the drive options for internal storage of the server.

2.5-inch hot-swap drives:

• 2.5-inch hot-swap 12 Gb SAS HDDs
• 2.5-inch hot-swap 6 Gb SATA HDDs
• 2.5-inch hot-swap 6 Gb SATA SSDs
• 2.5-inch hot-swap PCIe 4.0 NVMe SSDs

3.5-inch hot-swap drives:

• 3.5-inch hot-swap 12 Gb SAS HDDs
• 3.5-inch hot-swap 6 Gb SATA HDDs
• 3.5-inch hot-swap 6 Gb SATA SSDs

Simple-swap drives:

• 3.5-inch simple-swap 6 Gb SATA HDDs
• 3.5-inch simple-swap 6 Gb SATA SSDs
• M.2 drives:
• M.2 SATA drives

Table 22. 2.5-inch hot-swap 12 Gb SAS HDDs

Table 23. 2.5-inch hot-swap 6 Gb SATA HDDs

Table 24. 2.5-inch hot-swap 6 Gb SATA SSDs

Table 25. 2.5-inch hot-swap PCIe 4.0 NVMe SSDs

Note: NVMe PCIe SSDs support surprise hot removal and hot insertion, provided the operating system
supports PCIe SSD hot-swap.
Table 27. 3.5-inch hot-swap 12 Gb SAS HDDs

Table 28. 3.5-inch hot-swap 6 Gb SATA HDDs

Table 29. 3.5-inch hot-swap 6 Gb SATA SSDs

Table 30. 3.5-inch simple-swap 6 Gb SATA HDDs

Table 31. 3.5-inch simple-swap 6 Gb SATA SSDs

Table 32. M.2 SATA drives

USB memory key
For general portable storage needs, the server also supports the USB memory key option that is listed in the following table.
Table 33. USB memory key

Optical drives
The server supports the external USB optical drive listed in the following table.
Table 34. External optical drive

The drive is based on the Lenovo Slim DVD Burner DB65 drive and supports the following formats: DVD-RAM, DVD-RW, DVD+RW, DVD+R, DVD-R, DVD-ROM, DVD-R DL, CD-RW, CD-R, CD-ROM.

I/O expansion

The SR250 server supports up to three PCIe slots: one slot on the system planar that supports an internal storage controller and up to two PCIe slots on a riser card.
The slot form factors are as follows:

• Slot 1: PCIe 3.0 x8; low profile (not present if the Slot 2 is x16)
• Slot 2: PCIe 3.0 x8 (x16 physical connector) or x16; full-height, half-length
• Slot 3 PCIe 3.0 x4 (x8 physical connector; supports an internal storage controller)

The locations of the PCIe slots are shown in the following figure

The following table lists available PCIe riser card options.
Table 35. PCIe riser cards

Network adapters

The SR250 server supports two onboard Gigabit Ethernet network ports that are based on the Broadcom BCM5720 network interface controller (NIC) chip.
The integrated NIC has the following features:

• Two 10/100/1000 Mb Ethernet RJ-45 ports
• NIC Teaming (load balancing and failover)
• IEEE 802.3ad Link Aggregation
• I/O Virtualization (IOV) for VMWare NetQueue and Microsoft VMQ
• IEEE 802.1Q Virtual Local Area Networks (VLANs)
• IEEE 802.3x flow control
• TCP, IP, and UDP checksum offload
• Large Send Offload (LSO) and TCP Segmentation Offload (TSO)
• Receive Side Scaling (RSS) and Transmit Side Scaling (TSS)
• Jumbo frames up to 9600 bytes
• IEEE 802.3az-2010 Energy Efficient Ethernet (EEE) compliant
• Hardware assist for IEEE 1588 and IEEE 802.1AS time synchronization implementations
• Preboot eXecution Environment (PXE) and iSCSI remote boot options

The following table lists the network adapters that are supported with the SR250 server.

Table 36. Network adapters

Configuration notes:

• PCIe full-height network adapters are supported in the full-height PCIe slot 2 supplied by the PCIe x8 or x16 riser card.
• PCIe Low Profile network adapters are supported in the full-height and low profile slots supplied by the PCIe x8 or x16 riser card.
• Supported transceivers or DAC cables should be purchased for the SFP+ and SFP28 adapters, and UTP Category 6 or Category 5e cables should be purchased for the 10 GbE (Cat6) or 1 GbE (Cat5e or Cat6) RJ-45 adapters. The maximum number of transceivers or cables that are supported per adapter equals the quantity of the adapter ports, and all adapter ports must have the same type of the transceiver or cable selected.

For more information, see the list of Product Guides in the Ethernet Adapters category:
http://lenovopress.com/servers/options/ethernet#rt=product-guide

SAS adapters for external storage
The following table lists SAS RAID controllers and HBAs for external storage attachments that are supported by the SR250 server.
Table 37. SAS RAID adapters and HBAs for external storage

Configuration notes:

• Low profile SAS RAID controllers and HBAs for external storage are supported in the low profile and full-high PCIe slots supplied by the x8 or x16 riser card.
• The total quantity of the RAID 730-8i 2GB, 930-8i, 930-16i, and 930-8e controllers in the server must not exceed 1 (up to 1 supercapacitor can be mounted in the server).

RAID 930-8e adapter: The RAID 930-8e is not supported installed with any X40 internal (8i or 16i or 32i) RAID adapters.
The following table summarizes features of supported RAID controllers and HBAs for external storage.
Table 38. Features and specifications of the RAID controllers and HBAs for external storage

* HBAs do not support key management for SEDs; third-party host software is responsible for managing the keys.
** The SSD caching feature has been phased out in the new generation of advanced RAID controllers.
For more information, see the list of Product Guides in the following categories:
RAID adapters
http://lenovopress.com/servers/options/raid#rt=product-guide
Host bus adapters
http://lenovopress.com/servers/options/hba#rt=product-guide

Fibre Channel host bus adapters
The following table lists Fibre Channel HBAs supported by the SR250 server.
Table 39. Fibre Channel HBAs

Configuration note: FC HBAs are supported in the low profile and full-high PCIe slots supplied by the PCIe x8 or x16 riser card.
For more information, see the list of Product Guides in the Host bus adapters category:
http://lenovopress.com/servers/options/hba#rt=product-guide

GPU adapters
The SR250 does not support any GPUs that are currently available.

Cooling
The SR250 server ships with four non-hot-swap system fans.
Configuration note: The server performance might be impacted in case of a system fan failure.
Power supplies and cables
The SR250 server supports one fixed power supply or up to two redundant hot-swap power supplies. With two power supplies, the server is capable of N+N redundancy depending on the configuration. A second power supply can be added to the models that come with one hot-swap power supply. The following table lists the power supply options.

Table 41. Power supplies

Configuration notes:

• Configurations with 300 W fixed power supplies (feature code B40Q) are supported only for Machine Types 7Y51, 7Y52, and 7Y73.
• Configurations with 450 W hot-swap power supplies (4P57A12649) that are available worldwide (except India) are supported only for Machine Types 7Y51 and 7Y52.
• Configurations with 450 W hot-swap power supplies for India (4P57A16264) are supported only for Machine Type 7Y72.
• To ensures that the properly sized power supply is chosen for optimal performance, it is highly recommended to validate system configuration for specific power requirements by using the latest version of the Lenovo Capacity Planner:

http://datacentersupport.lenovo.com/us/en/solutions/lnvo-lcp
The SR250 server ship standard with or without a power cord (model dependent). A hot-swap power supply option ships without a power cord.
The following table lists the line cords and rack power cables that can be ordered for the SR250 server. One or two power cables can be ordered, depending on the quantity of power supplies in the server.
Table 42. Power cables

Systems management

The SR250 supports the following systems management tools:

• Lenovo XClarity Controller
• Lenovo XClarity Provisioning Manager
• Lenovo XClarity Essentials
• Lenovo XClarity Administrator
• Lenovo XClarity Integrators
• Lenovo XClarity Energy Manager
• Lenovo Capacity Planner

IPMI via the Ethernet port (IPMI over LAN) is supported, however it is disabled by default. For CTO orders you can specify whether you want to the feature enabled or disabled in the factory, using the feature codes listed in the following table.
Table 43. IPMI-over-LAN settings

The following table lists the XClarity Controller FoD upgrades.
Table 44. XClarity Controller FoD upgrades

If software support is required for Lenovo XClarity Administrator, or Lenovo XClarity Administrator premium features (such as configuration management and operating system deployment) are required, or both, Lenovo XClarity Pro software subscription should be ordered. Lenovo XClarity Pro is licensed on a per managed system basis, that is, each managed Lenovo system requires a license. The following table lists the geo-specific Lenovo XClarity software license options.
Table 45. Lenovo XClarity software options

Lenovo XClarity Energy Manager offers the following capabilities:

• Monitors room, row, rack, and device levels in the data center
• Reports vital server information, such as power, temperature and resource utilization
• Monitors inlet temperature to locate hot spots, reducing the risk of data or device damage
• Provides finely-grained controls to limit platform power in compliance with IT policy
• Generates alerts when a user-defined threshold is reached

Lenovo XClarity Energy Manager is an optional software component for the SR250 server that is licensed on a per managed node basis, that is, each managed server requires a license. The 1-node Energy Manager license is included in the XClarity Controller Enterprise upgrade. To manage systems without XClarity Controller Enterprise licenses, a node license pack should be purchased. The following table lists the geo-specific Lenovo XClarity Energy Manager software license options.
Table 46. Lenovo XClarity Energy Manager software options

For more information, refer to the Lenovo XClarity Energy Manager web page:
http://datacentersupport.lenovo.com/us/en/solutions/lnvo-lxem

Lenovo Capacity Planner
Lenovo Capacity Planner is a power consumption evaluation tool that enhances data center planning by enabling IT administrators and pre-sales professionals to understand various power characteristics of racks, servers, and other devices. Capacity Planner can dynamically calculate the power consumption, current, British Thermal Unit (BTU), and volt-ampere (VA) rating at the rack level, improving the planning efficiency for large scale deployments.
For more information, refer to the Capacity Planner web page:
http://datacentersupport.lenovo.com/us/en/solutions/lnvo-lcp

Security
The SR250 server offers the following security features:

• Power-on password
• Administrator’s password
• Secure firmware updates
• Onboard Trusted Platform Module (TPM) version 1.2 or 2.0 (configurable UEFI system setting)
• Nationz Trusted Platform Module v2.0 (optional; PRC only)
• Lockable front bezel (optional)
• Self-encrypting drives (SEDs) with support for enterprise key managers – see the SED encryption key management section
• Lenovo Business Vantage security software (optional; PRC only)

The following table lists the security options that are available for the SR250 server.
Table 47. Security options

Lenovo Business Vantage is a security software tool suite (available only in PRC) designed to work with the Nationz TPM for enhanced security, to keep user data safe, and to erase confidential data completely from a hard disk drive.
Lenovo Business Vantage provides the following features:

• Encrypts files to ensure data safety by using the Nationz TPM.
• Erases confidential data from a hard disk.
• Prohibits unauthorized access to the USB port of devices.
• Encrypts files to ensure data security on a USB storage device

For more information, refer to the Lenovo Business Vantage web page:
http://support.lenovo.com.cn/lenovo/wsi/es/es.html

Table 48. Intel Transparent Supply Chain ordering information

For more information on this offering, see the paper Introduction to Intel Transparent Supply Chain on Lenovo ThinkSystem Servers, available from https://lenovopress.com/lp1434-introduction-to-intel-transparent-supplychain-on-thinksystem-servers.

Rack installation
The following table lists the rack installation options that are available for the SR250 server.

Table 49. Rack installation options

The following table summarizes the rail kit features and specifications.
Table 50. Rail kit features and specifications summary

* If a 0U PDU used, the rack cabinet must be at least 1000 mm (39.37 in.) deep.
^ Measured when mounted on the rack cabinet, from the front surface of the front mounting flange to the rear most point of the rail.

Operating system support

The server supports the following operating systems:

• Microsoft Windows Server 2016
• Microsoft Windows Server 2019
• Microsoft Windows Server 2022
• Red Hat Enterprise Linux 7.7
• Red Hat Enterprise Linux 7.8
• Red Hat Enterprise Linux 7.9
• Red Hat Enterprise Linux 8.1
• Red Hat Enterprise Linux 8.2
• Red Hat Enterprise Linux 8.3
• Red Hat Enterprise Linux 8.4
• Red Hat Enterprise Linux 8.5
• Red Hat Enterprise Linux 8.6
• Red Hat Enterprise Linux 9.0
• SUSE Linux Enterprise Server 12 SP5
• SUSE Linux Enterprise Server 12 Xen SP5
• SUSE Linux Enterprise Server 15 SP1
• SUSE Linux Enterprise Server 15 SP2
• SUSE Linux Enterprise Server 15 SP3
• SUSE Linux Enterprise Server 15 SP4
• SUSE Linux Enterprise Server 15 Xen SP1
• SUSE Linux Enterprise Server 15 Xen SP2
• SUSE Linux Enterprise Server 15 Xen SP3
• SUSE Linux Enterprise Server 15 Xen SP4
• VMware ESXi 6.5 U3
• VMware ESXi 6.7 U3
• VMware ESXi 7.0
• VMware ESXi 7.0 U1
• VMware ESXi 7.0 U2
• VMware ESXi 7.0 U3

For a complete list of supported, certified and tested operating systems, plus additional details and links to relevant web sites, see the Operating System Interoperability Guide:
https://lenovopress.com/osig#servers=sr250-7y51-7y52-e-2200
For configure-to-order configurations, the server can be preloaded with VMware ESXi. Ordering information is listed in the following table.
Table 51. VMware ESXi preload

Physical specifications

The SR250 has the following overall physical dimensions, excluding components that extend outside the standard chassis, such as EIA flanges, front security bezel (if any), and power supply handles:

• Width: 435 mm (17.1 inches)
• Height: 43 mm (1.7 inches)
• Depth: 545 mm (21.5 inches)

The following table lists the detailed dimensions. See the figure below for the definition of each dimension.
Table 52. Detailed dimensions

The shipping dimensions (cardboard packaging) of the SR250 are as follows:

• Width: 186 mm (7.3 inches)
• Height: 879 mm (34.6 inches)
• Depth: 600 mm (23.6 inches)

The SR250 server has the following weight:

• Base configuration: 9.1 kg (20.1 lb)
• Maximum configuration: 12.3 kg (27.1 lb)

The following table lists the maximum system power load, rated inlet current, and system heat output based on the power supply and source voltage.
Table 53. Rated system power, inlet current, and system heat output

Warranty and support

The SR250 server comes with a three-year (Machine Type 7Y51) or one-year (Machine Type 7Y52) customer-replaceable unit (CRU) and onsite limited (for field-replaceable units [FRUs] only) warranty with standard call center support during normal business hours and 9×5 Next Business Day Parts Delivered. Lenovo’s additional support services provide a sophisticated, unified support structure for a customer’s data center, with an experience consistently ranked number one in customer satisfaction worldwide. The following Lenovo support services are available:

• Premier Support provides a Lenovo-owned customer experience and delivers direct access to technicians skilled in hardware, software, and advanced troubleshooting, in addition to the following capabilities:
  • Direct technician-to-technician access through a dedicated phone line.
  • 24x7x365 remote support.
  • Single point of contact service.
  • End to end case management.
  • 3rd Party collaborative software support.
  • Online case tools and live chat support.
  • On-demand remote system analysis.
• Warranty Upgrades (Preconfigured Support) are available to meet the on-site response time targets that match the criticality of customer’s systems:
  • 3, 4, or 5 years of service coverage.
  • 1-year or 2-year post-warranty extensions.
  • Foundation Service: 9×5 service coverage with next business day onsite response, with optional YourDrive YourData.
  • Essential Service: 24×7 service coverage with 4-hour onsite response or 24-hour committed repair (available only in select regions), bundled with YourDrive YourData.
  • Advanced Service: 24×7 service coverage with 2-hour onsite response or 6-hour committed repair (available only in select regions), bundled with YourDrive YourData.
• Managed Services
  Lenovo Managed Services provide continuous 24×7 remote monitoring (plus 24×7 call center availability) and proactive management of a customer’s data center using state of the art tools, systems, and practices by a team of highly skilled and experienced Lenovo services professionals. Quarterly reviews check error logs, verify firmware and operating system device driver levels, and
  software as needed. Lenovo will also maintain records of latest patches, critical updates, and firmware levels, to ensure customer’s systems are providing business value through optimized performance.
• Technical Account Management (TAM)
  A Lenovo Technical Account Manager helps customers optimize operations of their data centers based
  on a deep understanding of customer’s business. Customers gain direct access to a Lenovo TAM, who serves as their single point of contact to expedite service requests, provide status updates, and furnish reports to track incidents over time. Also, a TAM helps proactively make service recommendations and manage service relationship with Lenovo to make certain that customer’s needs are met.
• Enterprise Software Support
  Lenovo Enterprise Software Support is an additional support service that provides customers with software support on Microsoft, Red Hat, SUSE, and VMWare applications and systems. Around the clock availability for critical problems plus unlimited calls and incidents helps customers address challenges fast, without incremental costs. Support staff can answer troubleshooting and diagnostic questions, address product compatibility and interoperability issues, isolate causes of problems, report defects to software vendors, and more.
• YourDrive YourData
  Lenovo’s YourDrive YourData service is a multi-drive retention offering that ensures that customer’s data is always under their control, regardless of the number of drives that are installed in their Lenovo server. In the unlikely event of a drive failure, customers retain possession of their drive while Lenovo replaces the failed drive part. Customer’s data stays safely on customer premises, in their hands. The YourDrive YourData service can be purchased in convenient bundles with Foundation, Essential, or Advanced Service upgrades and extensions.
• Health Check
  Having a trusted partner who can perform regular and detailed health checks is central to maintaining efficiency and ensuring that customer systems and business are always running at their best. Health Check supports Lenovo-branded server, storage, and networking devices, as well as select Lenovosupported products from other vendors that are sold by Lenovo or a Lenovo-Authorized Reseller.

Some regions might have different warranty terms and conditions than the standard warranty. This is due to local business practices or laws in the specific region. Local service teams can assist in explaining regionspecific terms when needed. Examples of region-specific warranty terms are second or longer business day parts delivery or parts-only base warranty. If warranty terms and conditions include onsite labor for repair or replacement of parts, Lenovo will dispatch a service technician to the customer site to perform the replacement. Onsite labor under base warranty is limited to labor for replacement of parts that have been determined to be field-replaceable units (FRUs). Parts that are determined to be customer-replaceable units (CRUs) do not include onsite labor under base warranty. If warranty terms include parts-only base warranty, Lenovo is responsible for delivering only replacement parts that are under base warranty (including FRUs) that will be sent to a requested location for self-service. Partsonly service does not include a service technician being dispatched onsite. Parts must be changed at customer’s own cost and labor and defective parts must be returned following the instructions supplied with the spare parts. Lenovo support services are region-specific. Not all support services are available in every region. For information about Lenovo support services that are available in a specific region, refer to the following resources:

• Service part numbers in Data Center Solution Configurator (DCSC):
  http://dcsc.lenovo.com/#/services
• Lenovo Services Availability Locator
  https://lenovolocator.com/

For service definitions, region-specific details, and service limitations, refer to the following documents:

• Lenovo Statement of Limited Warranty for Infrastructure Solutions Group (ISG) Servers and System Storage
  http://pcsupport.lenovo.com/us/en/solutions/ht503310
• Lenovo Data Center Services Agreement
  http://support.lenovo.com/us/en/solutions/ht116628

Services

Lenovo Services is a dedicated partner to customer success. Lenovo’s goal for customers is to reduce capitaloutlays, mitigate IT risks, and accelerate time to productivity.
Here is a more in-depth look at what Lenovo can do for their customers:

• Asset Recovery Services
  Asset Recovery Services (ARS) helps customers recover the maximum value from their end-of-life equipment in a cost-effective and secure way. On top of simplifying the transition from old to new equipment, ARS mitigates environmental and data security risks associated with data center equipment disposal. Lenovo ARS is a cash-back solution for equipment based on its remaining market value, yielding maximum value from aging assets and lowering total cost of ownership for customers. For more information, see the ARS page, http://lenovopress.com/lp1266.
• Assessment Services
  An assessment helps solve customer IT challenges through an onsite, multi-day session with a Lenovo technology expert. Lenovo performs a tools-based assessment which provides a comprehensive and thorough review of a company’s environment and technology systems. In addition to the technology-based functional requirements, the consultant also discusses and records the non-functional business
  requirements, challenges, and constraints. Assessments help organizations, no matter how large or
  small, get a better return on their IT investment and overcome challenges in the ever-changing
  technology landscape.
• Design Services
  Professional Services consultants perform infrastructure design and implementation planning to support customer’s strategy. The high-level architectures provided by the assessment service are turned into low level designs and wiring diagrams, which are reviewed and approved prior to implementation. The implementation plan will demonstrate an outcome-based proposal to provide business capabilities through infrastructure with a risk-mitigated project plan.
• Basic Hardware Installation
  Lenovo experts can seamlessly manage the physical installation of customer’s server, storage, or networking hardware. Working at a time convenient for the customer (business hours or off shift), the technician will unpack and inspect the systems on customer site, install options, mount in a rack cabinet, connect to power and network, check and update firmware to the latest levels, verify operation, and dispose of the packaging, allowing customers to focus on other priorities.
• Deployment Services
  When investing in new IT infrastructures, customers need to ensure that their business will see quick time to value with little to no disruption. Lenovo deployments are designed by development and engineering teams who know Lenovo products and solutions better than anyone else, and Lenovo technicians own the process from delivery to completion. Lenovo will conduct remote preparation and planning, configure and integrate systems, validate systems, verify and update appliance firmware, train on administrative tasks, and provide post-deployment documentation. Customer’s IT teams leverage Lenovo skills to enable IT staff to transform with higher level roles and tasks.
• Integration, Migration, and Expansion Services
  Integration, Migration, and Expansion Services allow to move existing physical and virtual workloads easily, or to determine technical requirements to support increased workloads while maximizing performance. These services include tuning, validation, and documenting ongoing run processes, and they leverage migration assessment planning documents to perform necessary migrations.

Some service options may not be available in every region. For more information about Lenovo service offerings that are available in a specific region, contact a local Lenovo sales representative or business partner.

Regulatory compliance
The ThinkSystem SR250 server conforms to the following regulations:

• Energy Star 3.0
• FCC Title 47 CFR Part 15 Subpart B
• ICES-003/NMB-03, Class A
• UL62368-1
• NOM-019
• VCCI, Class A
• AS/NZS CISPR 32, Class A
• CCC GB4943.1, GB9254 Class A, GB17625.1, CECP, CELP
• BSMI CNS13438, Class A; CNS14336-1; CNS15663
• KN32, Class A; KN35
• BIS
• TR CU 020/2011; TR CU 004/2011
• IEC60950-1, IEC62368-1 (CB Certificate and CB Test Report)
• CE Mark (EN55032 Class A, EN60950-1, EN55024, EN50581, EN61000-3-2, EN61000-3-3, EN62368- 1)
• CISPR 32, Class A
• TUV-GS (EK1-ITB2000, EN62368-1)
• Reduction of Hazardous Substances (ROHS)

External drive enclosures
The server supports attachment to external drive enclosures using a RAID controller with external ports or a SAS host bus adapter. Adapters supported by the server are listed in the SAS adapters for external storage section.
Note: Information provided in this section is for ordering reference purposes only. For the operating system and adapter support details, refer to the interoperability matrix for a particular storage enclosure that can be found on the Lenovo Data Center Support web site:
http://datacentersupport.lenovo.com

Table 54. External drive enclosures

For details about supported drives, adapters, and cables, see the following Lenovo Press Product Guides:

• Lenovo Storage D1212 and D1224
  http://lenovopress.com/lp0512
• Lenovo Storage D3284
  http://lenovopress.com/lp0513

External storage systems

Lenovo offers the ThinkSystem DE Series and ThinkSystem DM Series external storage systems for highperformance storage. See the DE Series and DM Series product guides for specific controller models, expansion enclosures and configuration options:

• ThinkSystem DE Series Storage
  https://lenovopress.com/storage/thinksystem/de-series#rt=product-guide
• ThinkSystem DM Series Storage
  https://lenovopress.com/storage/thinksystem/dm-series#rt=product-guide

External backup units
The following table lists the external backup options that are offered by Lenovo.
Table 55. External backup options

For more information, see the list of Product Guides in the Backup units category:
https://lenovopress.com/servers/options/backup

Fibre Channel SAN switches
Lenovo offers the ThinkSystem DB Series of Fibre Channel SAN switches for high-performance storage
expansion. See the DB Series product guides for models and configuration options:

• ThinkSystem DB Series SAN Switches:
  https://lenovopress.com/storage/switches/rack#rt=product-guide

Rack cabinets
The following table lists the supported rack cabinets.
Table 56. Rack cabinets

For specifications about these racks, see the Lenovo Rack Cabinet Reference, available from:
https://lenovopress.com/lp1287-lenovo-rack-cabinet-reference
For more information, see the list of Product Guides in the Rack cabinets category:
https://lenovopress.com/servers/options/racks

KVM switches and consoles
The following table lists the supported KVM consoles.
Table 57. KVM console

The following table lists the available KVM switches and the options that are supported with them.

Table 59. KVM switches and options

For more information, see the list of Product Guides in the KVM Switches and Consoles category:
http://lenovopress.com/servers/options/kvm
Power distribution units
The following table lists the power distribution units (PDUs) that are offered by Lenovo.
Table 60. Power distribution units

For more information, see the Lenovo Press documents in the PDU category:
https://lenovopress.com/servers/options/pdu

Uninterruptible power supply units
The following table lists the uninterruptible power supply (UPS) units that are offered by Lenovo.
Table 61. Uninterruptible power supply units

† Only available in China and the Asia Pacific market.
For more information, see the list of Product Guides in the UPS category:
https://lenovopress.com/servers/options/ups

Lenovo Financial Services
Lenovo Financial Services reinforces Lenovo’s commitment to deliver pioneering products and services that are recognized for their quality, excellence, and trustworthiness. Lenovo Financial Services offers financing solutions and services that complement your technology solution anywhere in the world. We are dedicated to delivering a positive finance experience for customers like you who want to maximize your purchase power by obtaining the technology you need today, protect against technology obsolescence, and preserve your capital for other uses.  We work with businesses, non-profit organizations, governments and educational institutions to finance their entire technology solution. We focus on making it easy to do business with us. Our highly experienced team offinance professionals operates in a work culture that emphasizes the importance of providing outstanding customer service. Our systems, processes and flexible policies support our goal of providing customers with a positive experience. We finance your entire solution. Unlike others, we allow you to bundle everything you need from hardware and software to service contracts, installation costs, training fees, and sales tax. If you decide weeks or months  later to add to your solution, we can consolidate everything into a single invoice.Our Premier Client services provide large accounts with special handling services to ensure these complex transactions are serviced properly. As a premier client, you have a dedicated finance specialist who manages your account through its life, from first invoice through asset return or purchase. This specialist develops an indepth understanding of your invoice and payment requirements. For you, this dedication provides a highquality, easy, and positive financing experience. For your region-specific offers, please ask your Lenovo sales representative or your technology provider about
the use of Lenovo Financial Services. For more information, see the following Lenovo website:
https://www.lenovo.com/us/en/landingpage/lenovo-financial-services/

Related publications and links
For more information, see these resources:

• Lenovo ThinkSystem SR250 product page
  http://www3.lenovo.com/us/en/p/77XX7SRSR25
• Lenovo Data Center Solution Configurator (DCSC):
  http://dcsc.lenovo.com
• User Guides – ThinkSystem SR250
  http://thinksystem.lenovofiles.com/help/topic/7Y51/introduction.html
• Lenovo Data Center Support Downloads – ThinkSystem SR250
  http://datacentersupport.lenovo.com/products/servers/thinksystem/sr250/7y51/downloads
  http://datacentersupport.lenovo.com/products/servers/thinksystem/sr250/7y52/downloads
  http://datacentersupport.lenovo.com/products/servers/thinksystem/sr250/7y72/downloads
  http://datacentersupport.lenovo.com/products/servers/thinksystem/sr250/7y73/downloads

Related product families
Product families related to this document are the following:

• 1-Socket Rack Servers
• hinkSystem SR250 Server

Notices
Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any Lenovo intellectual property right may be used instead. However, it is the user’s responsibility to evaluate and verify the operation of any other product, program, or service. Lenovo may have patents or pending patent applications covering subject matter described in this document. The furnishing of this document does not give you any license to these patents. You can send license inquiries, in writing, to:
Lenovo (United States), Inc.
8001 Development Drive
Morrisville, NC 27560
U.S.A.
Attention: Lenovo Director of Licensing
LENOVO PROVIDES THIS PUBLICATION ”AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do not allow disclaimer of express or implied warranties in certain transactions, therefore, this statement may not apply to you. This information could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. Lenovo may make improvements and/or changes in the product(s) and/or the program(s) described in this publication at any time without notice. The products described in this document are not intended for use in implantation or other life support applications where malfunction may result in injury or death to persons. The information contained in this document does not affect or change Lenovo product specifications or warranties. Nothing in this document shall operate as an express or implied license or indemnity under the intellectual property rights of Lenovo or third parties. All information contained in this document was obtained in specific environments and is presented as an illustration. The result obtained in other operating environments may vary. Lenovo may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you. Any references in this publication to non-Lenovo Web sites are provided for convenience only and do not in any manner serve as an endorsement of those Web sites. The materials at those Web sites are not part of the materials for this Lenovo product, and use of those Web sites is at your own risk. Any performance data contained herein was determined in a controlled environment. Therefore, the result obtained in other operating environments may vary significantly. Some measurements may have been made on development-level systems and there is no guarantee that these measurements will be the same on generally available systems. Furthermore, some measurements may have been estimated through extrapolation. Actual results may vary. Users of this document should verify the applicable data for their specific environment.

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References

• Home - Data Center Support - Lenovo Support US
• servers :: thinksystem :: sr250 :: 7y51 Lenovo Data Center Support - Lenovo Support US
• servers :: thinksystem :: sr250 :: 7y52 Lenovo Data Center Support - Lenovo Support US
• servers :: thinksystem :: sr250 :: 7y72 Lenovo Data Center Support - Lenovo Support US
• servers :: thinksystem :: sr250 :: 7y73 Lenovo Data Center Support - Lenovo Support US
• Lenovo Capacity Planner (LCP) - Lenovo Support US
• Lenovo XClarity Energy Manager (LXEM) - Lenovo Support US
• DCSC - Data Center Solution Configurator
• DCSC - Data Center Solution Configurator
• Lenovo Storage D1212 and D1224 Drive Enclosures Product Guide > Lenovo Press
• Lenovo Storage D3284 External High Density Drive Expansion Enclosure Product Guide > Lenovo Press
• Reduce E-Waste and Grow Your Bottom Line with Lenovo Asset Recovery Services (ARS) > Lenovo Press
• Ethernet Adapters > Lenovo Press
• Host Bus Adapters > Lenovo Press
• KVM Switches & Consoles > Lenovo Press
• RAID Adapters > Lenovo Press
• Lenovo XClarity Administrator Product Guide > Lenovo Press
• Lenovo Statement of Limited Warranty for Data Center Group (DCG) Servers, System Storage and Networking - Lenovo Support US
• Home - Data Center Support - Lenovo Support CN
• Lenovo XClarity Essentials (ToolsCenter) - Lenovo Support US
• Lenovo Data Center Services Agreement - Lenovo Support US
• ThinkSystem SR250 - ThinkSystem SR250
• Lenovo ThinkSystem SR250 | Rack Servers | Lenovo US
• DCSC - Data Center Solution Configurator
• Services Availability Locator
• Lenovo Rack Cabinet Reference > Lenovo Press
• Lenovo ThinkSystem RAID Adapter and HBA Reference > Lenovo Press
• Introduction to Intel Transparent Supply Chain on Lenovo ThinkSystem Servers > Lenovo Press
• Introduction to Intel Transparent Supply Chain on Lenovo ThinkSystem Servers > Lenovo Press
• OS Interoperability Guide > Lenovo Press
• Backup Units > Lenovo Press
• Power Distribution Units > Lenovo Press
• Rack Cabinets > Lenovo Press
• Uninterruptible Power Supplies > Lenovo Press
• Rack SAN Switches > Lenovo Press