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SR950 LENOVO SITE : https://lenovopress.com/lp0647-thinksystem-sr950-server

Lenovo ThinkSystem SR950 Server

한글메뉴얼

sr950_setup_guide.pdf

-파트리스트 링크(partlist)

https://datacentersupport.lenovo.com/kr/ko/products/servers/thinksystem/sr950/7x13/parts

Introduction

Lenovo ThinkSystem SR950 is designed for your most demanding, mission-critical workloads, such as in-memory databases, large transactional databases, batch and real-time analytics, ERP, CRM, and virtualized server workloads. The powerful 4U ThinkSystem SR950 can grow from two to eight Intel Xeon Scalable Family processors, and with 96 DIMM sockets, supports up to 12 TB of high-speed memory. The modular design of SR950 speeds upgrades and servicing with easy front or rear access to all major subsystems to maximize server availability.

The SR950 packs numerous fault-tolerant and high-availability features into a high-density, 4U rack-optimized design that reduces the space needed to support massive network computing operations and simplify servicing.

The following figure shows the Lenovo ThinkSystem SR950.

Figure 1. Lenovo ThinkSystem SR950

Did you know?

The SR950 server supports up to eight processors in a single 4U chassis. You can upgrade from a 2-socket system to an 8-socket system without having to replace the server enclosure or upgrade to a physically larger design. The SR950 offers enterprise scalability and advanced RAS features to support the most demanding mission-critical applications that require 24x7 operations.

Key features

Lenovo ThinkSystem SR950 is designed for your most demanding, mission-critical workloads, such as in-memory databases, large transactional databases, batch and real-time analytics, ERP, CRM, and virtualized server workloads. The powerful 4U ThinkSystem SR950 can grow from two to eight Intel Xeon Processor Scalable Family CPUs, achieving up to 45% faster performance than the previous generation. The modular design of SR950 speeds upgrades and servicing with easy front and rear access to all major subsystems, to maximize server uptime.

Scalability and performance

The SR950 offers numerous features to boost performance, improve scalability, and reduce costs:

Dense server offering where up to 8 processors and 96 DIMMs are housed in only 4U of rack space.
Offers a simple upgrade path that enables the server to be initially configured with as few as two processors and then later be upgraded to up to eight processors simply by adding a compute tray and system boards.
Supports the Gold and Platinum level processors in the Intel Xeon Processor Scalable Family, including the "top bin" highest-performing 205 W processors available from Intel.
Up to eight processors, each with up to 28 cores and 56 threads (for a total of up to 448 threads) to maximize the concurrent execution of multithreaded applications.
Intelligent and adaptive system performance with Intel Turbo Boost Technology 2.0 allows processor cores to run at maximum speeds during peak workloads by temporarily exceeding processor 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 use the hardware for virtualization workloads.
Support for up to 96 TruDDR4 DIMMs operating at 2666 MHz means you have the fastest available memory subsystem and memory capacity of up to 12 TB using 96x 128 GB 3DS RDIMMs.
Up to 24x 2.5-inch HDDs or SSDs provide a flexible and scalable all-in-one platform to meet your increasing demands.
Of the 24x drive bays, support for up to 12 NVMe PCIe SSDs maximizes drive I/O performance, in terms of throughput, bandwidth, IOPS, and latency.
The use of solid-state drives (SSDs) instead of, or along with, mechanical hard disk drives (HDDs), can improve I/O performance. An SSD can support up to 100 times more I/O operations per second (IOPS) than a typical HDD.
New high-speed RAID controllers provide 12 Gb SAS connectivity to the drive backplanes. A variety of RAID adapters are available, with cache up to 4 GB and support for 12 drives on a single controller.
Supports a new Lenovo-patented M.2 adapter design for convenient operating system boot functions. Available M.2 adapters support either one M.2 drive, or two M.2 drives in a RAID 1 configuration, for the boot drive performance and reliability.
The server has a dedicated flexible LAN-on-motherboard (LOM) slot offering a variety of 10 GbE or Gigabit Ethernet adapters that do not occupy one of the standard PCIe slots.
A total of up to 17 rear-accessible PCIe slots: 14 general-purpose PCIe 3.0 slots plus slots dedicated to the LOM adapter and two ML2 adapters. In addition, the server has two internal slots for RAID or HBA adapters.
The server offers PCI Express 3.0 I/O expansion capabilities that improve the theoretical maximum bandwidth by almost 100% (8 GTps per link using 128b/130b encoding) compared to the previous generation of PCI Express 2.0 (5 GTps per link using 8b/10b encoding).

Availability and serviceability

The SR950 is based on a modular service model where all components and options can be removed from the front or rear of the system, even parts that are located in the center of the machine such as fans, memory DIMMs, and processors.

Watch the following video to show how easy it is to service the SR950 server:
https://lenovopress.com/lp0899-thinksystem-sr950-ease-of-service-video

The SR950 provides many features to simplify serviceability and increase system uptime:

The server offers Single Device Data Correction (SDDC, also known as Chipkill), Adaptive Double- Device Data Correction (ADDDC, also known as Redundant Bit Steering or RBS), memory mirroring, and memory rank sparing for redundancy in the event of a non-correctable memory failure.
The server offers hot-swap drives, supporting RAID redundancy for data protection and greater system uptime.
The Dual M.2 Boot Adapter uses RAID-1 so that the two M.2 drives installed are configured as a redundant pair.
The server has up to four hot-swap N+N redundant power supplies to help keep the server operational in the event of a power supply or utility supply failure
Each compute tray has 6 hot-swap N+1 redundant fans (a total of 12 fans when two compute trays are installed) to maximize availability for business-critical applications.
The power source-independent light path diagnostics functionality provides individual light path LEDs that lead the technician to failed (or failing) components, which simplifies servicing, speeds up problem resolution, and helps increase system availability.
The included LCD system information display panel provides greater diagnostic function by listing all error messages and VPD data needed for a service call, thereby speeding problem resolution and increasing system uptime.
Proactive Platform Alerts (including PFA and SMART alerts): Processors, voltage regulators, memory, internal storage (SAS/SATA HDDs and SSDs, NVMe SSDs, M.2 storage, and flash storage adapters), fans, power supplies, RAID controllers, and server ambient and subcomponent temperatures. Alerts can be surfaced through the XClarity Controller to managers such as Lenovo XClarity Administrator, VMware vCenter, and Microsoft System Center. These proactive alerts let you take appropriate actions in advance of possible failure, thereby increasing server uptime and application availability.
Solid-state drives (SSDs) offer more reliability than mechanical HDDs for greater uptime.
The built-in XClarity Controller continuously monitors system parameters, triggers alerts, and performs recovery actions in case of failures to minimize downtime.
Built-in diagnostics in UEFI, using Lenovo XClarity Provisioning Manager, speed up troubleshooting tasks to reduce service time.
Lenovo XClarity Provisioning Manager supports diagnostic functions and collects service data to USB key drive or remote CIFS share folder for troubleshooting, to reduce servicing time.
Autorestart in the event of a momentary loss of AC power (based on power policy setting in the XClarity Controller service processor)
Support for the XClarity Administrator Mobile app running on a supported smartphone and connected to the server through the service-enabled USB port, enables additional local systems management functions.
Three-year or one-year customer-replaceable unit and onsite limited warranty, 9 x 5 next business day. Optional service upgrades are available.

Manageability and security

Powerful systems management features simplify local and remote management of the SR950:

The server includes an XClarity Controller (XCC) to monitor server availability and perform remote management. XCC Enterprise is included as standard, which enables remote KVM and remote media files (ISO and IMG image files), boot capture, and power capping.
Lenovo XClarity Administrator offers comprehensive hardware management tools that help to increase uptime, reduce costs and improve productivity through advanced server management capabilities.
New UEFI-based Lenovo XClarity Provisioning Manager, accessible from F1 during boot, provides system inventory information, graphical UEFI Setup, platform update function, RAID Setup wizard, operating system installation function, and diagnostic functions.
Support for Lenovo XClarity Energy Manager which captures real-time power and temperature data from the server and provides automated controls to lower energy costs.
Integrated Trusted Platform Module (TPM) 2.0 support enables advanced cryptographic functionality, such as digital signatures and remote attestation.
Supports Secure Boot to ensure that only a digitally signed operating system can be used. Supported with HDDs and SSDs as well as M.2 drives in the M.2 Adapter.
Industry-standard Advanced Encryption Standard (AES) NI support for faster, stronger encryption.
Intel Execute Disable Bit functionality can prevent certain classes of malicious buffer overflow attacks when combined with a supported operating system.
Intel Trusted Execution Technology provides enhanced security through hardware-based resistance to malicious software attacks, allowing an application to run in its own isolated space, protected from all other software running on a system.

Energy efficiency

The SR950 offers the following energy-efficiency features to save energy, reduce operational costs, and increase energy availability:

The server can be used in environments up to ASHRAE A4 with ambient temperatures up to 45 °C.
The server is Energy Star 2.1 compliant
Energy-efficient planar components help lower operational costs.
High-efficiency power supplies with 80 PLUS Platinum certifications
Intel Intelligent Power Capability powers individual processor elements on and off as needed, to reduce energy draw.
Low-voltage 1.2 V DDR4 memory offers energy savings compared to 1.35 V and 1.5 V DDR3 DIMMs.
Solid-state drives (SSDs) consume as much as 80% less power than mechanical 2.5-inch HDDs.
The server uses hexagonal ventilation holes, which can be grouped more densely than round holes, providing more efficient airflow through the system.
Optional Lenovo XClarity Energy Manager provide advanced data center power notification, analysis, and policy-based management to help achieve lower heat output and reduced cooling needs.

Components and connectors

The following figure shows the front of the SR950 server.

Figure 2. Front view of the Lenovo ThinkSystem SR950

The following figure shows the rear of the SR950 server. The server has up to 17 PCIe slots, depending on the riser cards selected and the number of processors installed.

Figure 3. Rear view of the Lenovo ThinkSystem SR950

The processors and other components are located on compute trays, the Upper Compute Tray and the Lower Compute Tray. Each compute tray holds up to four processors on two system boards. The compute trays are accessible from the front of the server, as shown in the following figure.

ThinkSystem SR950 with Lower Compute Tray partially removed
Figure 4. Lower Compute Tray partially removed

The server has one or two compute trays. Each compute tray contains:

One or two compute system boards, each comprising:
- Two processors
- 24 DIMMs
Six hot-swap fans, accessible even when the compute tray is installed
12x 2.5-inch hot-swap drive bays
One PCIe slot reserved for a RAID adapter for internal SAS/SATA drives

The following figure shows the rear of the compute tray with its two compute system boards, one of them removed.

SR950 compute tray with two compute system boards
Figure 5. Compute tray with two compute system boards

The compute system board is shown in the following figure. Each system board holds two processors and 24 DIMM sockets, 12 per processor. The system board also has connections for the NVMe ports used to connect to the PCIe NVMe drive bays at the front of the server.

ThinkSystem SR950 Compute System Board
Figure 6. Compute system board

Processors installed in the compute system boards are numbered as shown in the following figure.

Figure 7. Processor numbering (viewed from the rear of the compute trays)

For some four-socket storage-rich configurations, a storage tray is used in the upper tray area instead of a compute tray. The following figure shows the key components of the storage tray.

Figure 8. Storage tray

All slots and ports at the rear of the server are housed in the I/O tray as shown in the following figure.

Figure 9. I/O tray

Server configurations

The SR950 supports five different configurations, depending on the desired number of processors, drive bays, PCIe slots, and upgradability to an 8-socket configuration.

Notes:

The configurations listed here represent Lenovo's recommendations regarding the selection of compute system boards, I/O riser cards, and NVMe drive bays to maximize the available resources. You can select fewer drives and lower slot counts by using lower-slot-count riser cards to meet application requirements.
The use of only two, three or six processors in configurations where supported will reduce the available I/O slots and NVMe drive bays. This is described in details in the Internal storage section and the I/O expansion options section.
Configurations 1 and 2 support either two, three or four processors however the use 5100 Series processors requires that four processors be selected. Two or three 5100 Series processors are not supported in these configurations due to the way the processors are connected.
Configurations 3 and 4 are designed to be easily upgradable to 8 processors. As a result, 8100 Series processors are required.

When building a server in the configurator, the feature codes in the following table are key to selecting the right configuration.

Table 1. Feature codes for selecting base server configurations
Part number	Feature code	Description
CTO only	AUNY	SR950 2S to 4S Base (Upgrade to 8S using the 4S Performance to 8S Upgrade Kit)
CTO only	AUKF	SR950 2S to 8S Base (Simple upgrade without needing the upgrade kit
CTO only	AX3Y	12 Hard Drive Maximum System
CTO only	AX3Z	24 Hard Drive Maximum System

Upgrades: Configurations 1-4 can be upgraded to an 8-socket configuration (Configuration 5) as described in the Server configuration upgrades section.

Table 2. Server configurations
	Configuration 1. Four-Socket Performance The highest-performing 4-socket server, at the lowest cost when up to 12 drives is enough and without the need for a simple upgrade. Supports 2, 3 or 4 processors (if using 5100 Series processors, 4 processors must be selected) 4 sockets configured in mesh topology for best performance 12 drive bays, 6 of which support NVMe drives (4 NVMe with 3 processors and 2 NVMe with 2 processors) 15 rear PCIe slots with 4 processors (10 rear slots with 3 processors, 6 rear slots with 2 processors) Filler installed in the upper tray area Can be upgraded to 8S but requires the 4S Performance to 8S Upgrade Kit, additional components, and Lenovo hardware installation. Select feature codes AUNY and AX3Y
	Configuration 2. Four-Socket Performance/ Storage Rich The highest-performing 4-socket server, when needing more than 12 drives without the need for a simple upgrade. Supports 2, 3 or 4 processors (if using 5100 Series processors, 4 processors must be selected) 4 processors configured in mesh topology for best performance 24 drives, 12 of which support NVMe drives (8 NVMe with 3 processors, 4 NVMe with 2 processors) 13 rear PCIe slots with 4 processors (9 rear slots with 3 processors, 5 rear slots with 2 processors) Storage tray installed in the upper tray area Can be upgraded to 8S but requires the 4S Performance to 8S Upgrade Kit, additional components, and Lenovo hardware installation. Select feature codes AUNY and AX3Z
	Configuration 3. Four-Socket Upgradable The lowest-cost 4-socket server capable of a simple upgrade to 8 socket and when 12 drive bays with 4 processors is enough storage. 2 or 4 processors, must be 8100 Series processors 4 processors in a ring topology 12 drive bays including up to 6 NVMe (2 NVMe with 2 processors) Up to 15 rear PCIe slots with 4 processors (6 rear slots with 2 processors) Filler installed in the upper tray area Upgradable to 8-socket with an additional compute tray and two system boards Once upgraded, the system will have 24 drive bays Select feature codes AUKF and AX3Y
	Configuration 4. Four-Socket Upgradable / Storage Rich 4-socket server capable of a simple upgrade to 8-socket and needing more than 12 drive bays with 4 processors. Requires 4 processors, must be 8100 Series 4 processors in a ring topology 24 drive bays (including up to 4 NVMe) 10 rear PCIe slots Two compute trays, with one system board in each tray Upgradable to 8-socket with two additional system boards Once upgraded, the server will support 12 NVMe drives. Select feature codes AUKF and AX3Z
	Configuration 5. Eight-Socket Storage Rich Full featured 6- or 8-socket server with up to 24 drive bays and the maximum number of PCIe x16 slots. Requires 6 or 8 processors, must be 8100 Series 24 drive bays, 12 of which support NVMe drives (8 NVMe with 6 processors) 17 rear PCIe slots (13 rear slots with 6 processors installed) Two compute trays each with two system boards Select feature codes AUKF and AX3Z

The following table summarizes the configurations.

Table 3. SR950 server configurations
Configuration	Supported processors	Lower Tray	Upper Tray	Processor Topology	Maximum storage	Maximum PCIe slots	Upgrade to 8S?
4S Performance	2 or 4 Any processor†	Compute Tray	Filler	4S Mesh*	12 drives (6 NVMe)	15	Yes‡
4S Performance/ Storage Rich	4 Any processor	Compute Tray	Storage Tray	4S Mesh*	24 drives (12 NVMe)	13	Yes‡
4S Upgradable	2 or 4 8100 Series only	Compute Tray	Filler	4S Ring	12 drives (6 NVMe)	15	Yes**
4S Upgradable/ Storage Rich	4 8100 Series only	Compute Tray with 1 system board	Compute Tray with 1 system board	4S Ring	24 drives (4 NVMe)	10	Yes**
8S Storage Rich	8 8100 Series only	Compute Tray	Compute Tray	8S	24 drives (12 NVMe)	17	Not applicable

† If using 5100 Series processors, then 4 processors must be selected. Using two 5100 Series processors is not supported.
* Mesh topology requires a processor with 3 UPI connections; Processors such as the 5100 series with only 2 UPI connections will operate in Ring topology. See the table in the Processor options section.
‡ Upgrade requires the ThinkSystem SR950 4S Performance to 8S Upgrade Kit, 4TA7A10969. See the Server configuration upgrades section below.
** After upgrade, maximum storage will be 24 drives (12 NVMe) and up to 17 total PCIe slots available (may require replacement riser cards)

For details about PCIe slot availability based on each server configuration, see Slot availability by server configuration.

Server configuration upgrades

This section describes the system upgrades you can perform in the field. The upgrades are based on the configurations that are described in the Server configurations section.

Key components in the upgrades are listed in the following table.

Table 4. System upgrades
Part number	Feature code	Description
4TA7A10969	Various	ThinkSystem SR950 4S Performance to 8S Upgrade Kit
7XG7A03955	AUN0	ThinkSystem SR950 2-CPU, 24 DIMM Compute System Board
7XG7A03956	Various	ThinkSystem SR950 Upper Compute Tray Kit

4S Performance to 8S Upgrade Kit, 4TA7A10969, includes the following components:

4 mid-plane UPI & sideband interconnects

The Compute System Board option, 7XG7A03955, includes the following components:

One compute system board, without processors or memory

The Upper Compute Tray Kit, 7XG7A03956, includes the following components:

1x compute tray with 12 drive bays and 1 slot for storage adapter
1x compute system board
3x 4-bay drive bay fillers

Note: The Upper Compute Tray Kit does not include drive backplanes

The following table describes the before and after configurations and the components you will need to order to achieve the desired configuration.

Table 5. Upgrades to Server configurations (See Server configurations section for configuration definitions)
Initial configuration	Desired upgraded configuration	Parts to order and install
Configuration 1 (Four-Socket Performance) 2 processors installed	Configuration 1 (Four-Socket Performance) 4 processors installed	1x Compute System Board, 7XG7A03955 2x processor options (match installed) Memory DIMMs (matching installed is recommended)
Configuration 1 (Four-Socket Performance) 3 processors installed	Configuration 1 (Four-Socket Performance) 4 processors installed	1x processor option (match installed) Memory DIMMs (matching installed is recommended)
Configuration 1 (Four-Socket Performance) 4 processors installed (including SAP HANA models and configurations)	Configuration 5 (Eight-Socket Storage Rich) 8 processors installed	1x 4S Performance to 8S Upgrade Kit, 4TA7A10969 1x Upper Compute Tray Kit, 7XG7A03956* 1x Compute System Board, 7XG7A03955 4x 81xx processor options (match installed)** Memory DIMMs (matching installed is recommended) Drive backplanes for upper compute tray RAID adapter or HBA for upper compute tray Drives for upper compute tray Additional/replacement PCIe riser cards Lenovo Basic Hardware Installation services
Configuration 2 (Four-Socket Performance/ Storage Rich) 4 processors installed (including customized SAP HANA models)	Configuration 5 (Eight-Socket Storage Rich) 8 processors installed
Configuration 2 (Four-Socket Performance/ Storage Rich) 2 processors installed	Configuration 2 (Four-Socket Performance/ Storage Rich) 4 processors installed	1x Compute System Board, 7XG7A03955 2x processor options (match installed) Memory DIMMs (matching installed is recommended)
Configuration 2 (Four-Socket Performance/ Storage Rich) 3 processors installed	Configuration 2 (Four-Socket Performance/ Storage Rich) 4 processors installed	1x processor option (match installed) Memory DIMMs (matching installed is recommended)
Configuration 3 (Four-Socket Upgradable) 2 processors installed	Configuration 3 (Four-Socket Upgradable) 4 processors installed	1x Compute System Board, 7XG7A03955 2x processor options (match installed) Memory DIMMs (matching installed is recommended)
Configuration 3 (Four-Socket Upgradable) 4 processors installed	Configuration 5 (Eight-Socket Storage Rich) 8 processors installed	1x Upper Compute Tray Kit, 7XG7A03956* 1x Compute System Board, 7XG7A03955 4x 81xx processor options (match installed)* Memory DIMMs (matching installed is recommended) Drive backplanes for upper compute tray RAID adapter or HBA for upper compute tray Drives for upper compute tray Additional/replacement PCIe riser cards
Configuration 4 (Four-Socket Upgradable / Storage Rich) 4 processors installed	Configuration 5 (Eight-Socket Storage Rich) 8 processors installed	2x Compute System Board, 7XG7A03955 4x 81xx processor options (match installed)** Memory DIMMs (matching installed is recommended) Additional/replacement PCIe riser cards
Configuration 5 (Eight-Socket Storage Rich) 6 processors installed	Configuration 5 (Eight-Socket Storage Rich) 8 processors installed	2x processor option (match installed) Memory DIMMs (matching installed is recommended)

* The Upper Compute Tray Kit includes 1x Compute System Board
** 8-socket configurations must use Intel Xeon Platinum (81xx) processors

Configuration notes:

The added processors must match the processors already installed.
When upgrading to Configuration 5 (8-socket configuration), Platinum-level (81xx) processors must be used, as listed in the Processor options section. Gold processors do not support 8-socket configurations.
For best performance, each processor added should match the memory configuration of existing processors (number & size of DIMMs)
The ThinkSystem SR950 4S Performance to 8S Upgrade Kit, 4TA7A10969, contains the mid-chassis interconnects needed for an 8-socket configuration, replacing the existing interconnects. Lenovo installation is highly recommended due to the complexity of this upgrade. Installation cost will vary depending on location and scope of work.

Standard specifications

The following table lists the standard specifications.

Table 6. Standard specifications
Components	Specification
Machine type	7X11 - 1-year warranty 7X12 - 3-year warranty 7X13 - SAP HANA configurations with 3-year warranty
Form factor	4U rack
Processor	Up to eight Intel Xeon Processor Scalable Family of processors, either Gold or Platinum level processors (formerly codename "Skylake"). Supports processors with up to 28 cores, core speeds up to 3.6 GHz, and TDP ratings up to 205W. Processors and memory are located on system boards installed in compute trays: 2 processors per system board, 2 system boards per compute tray, and 2 compute trays in the server.
Chipset	Intel C624 chipset (formerly codename "Lewisburg")
Memory	Up to 96 DIMM sockets (12 DIMMs per processor, installed on each system board). Lenovo TruDDR4 RDIMMs, LRDIMMs and 3DS RDIMMs are supported. Each processor has 6 memory channels, with 2 DIMMs per channel
Memory maximums	With RDIMMs: Up to 3 TB with 96x 32 GB RDIMMs and eight processors With LRDIMMs: Up to 6 TB with 96x 64 GB LRDIMMs and eight processors With 3DS RDIMMs: Up to 12 TB with 96x 128 GB 3DS RDIMMs and eight processors Note: Support of more than 768 GB per processor (more than 3 TB for a 4-processor system or 6 TB for an 8-processor system) requires M-suffix processors with 1.5 TB memory support. See the Processor options section for information.
Memory protection	ECC, SDDC (for x4-based memory DIMMs), ADDDC (for x4-based memory DIMMs), memory mirroring, and memory sparing.
Disk drive bays	Up to 24x 2.5" hot-swap SAS/SATA drive bays. With AnyBay backplanes, 12 bays can be configured to support PCIe NVMe drives.
Maximum internal storage	Up to 184.3 TB with 24x 7.68 TB 2.5-inch SAS SSDs or Up to 48 TB with 24x 2 TB 2.5-inch NL SAS HDDs
Storage controller	No embedded RAID 12 Gb SAS/SATA RAID adapters: RAID 530i (cacheless) supports RAID 0, 1, 10, 5, 50 RAID 730-8i with 1GB cache supports RAID 0, 1, 10, 5, 50 RAID 930-8i with 2GB flash-backed cache supports RAID 0, 1, 10, 5, 50, 6, 60 RAID 930-16i with 4GB flash-backed cache supports RAID 0, 1, 10, 5, 50, 6, 60 12 Gb SAS/SATA non-RAID: 430-8i and 430-16i HBAs
Optical and tape bays	No internal bays.
Network interfaces	Integrated 10Gb Ethernet controller, based on the Intel Ethernet Connection X722. The server supports 1 of 6 available LOM adapters, providing either 2- or 4-port Gigabit Ethernet, 2- or 4-port 10 GbE with SFP+ connections or 2- or 4-port 10 GbE with RJ45 connections. One port can optionally be shared with the XClarity Controller (XCC) management processor for Wake-on-LAN and NC-SI support. 1 or 2 ML2 adapter slots for additional network adapters.
PCI Expansion slots	Up to 17 PCIe 3.0 rear-accessible slots: Slots 1-4 on a riser, one of: Riser with 4x PCIe 3.0 x16 slots, all full-height half-length, all 75W Riser with 2x PCIe 3.0 x16 slots, all full-height half-length, both 75W Riser with 4x PCIe 3.0 x8 slots, full-height half-length, all 75W Slot 5: PCIe 3.0 x16, low-profile, 75W Slot 6: PCIe 3.0 x16, low-profile, 75W Slot 7: PCIe 3.0 x8, low-profile, 75W Slot 8: PCIe 3.0 x16 ML2, low-profile (supports NC-SI) Slot 9: PCIe 3.0 x8 LOM adapter slot, low-profile (supports NC-SI) Slots 10-15 on a riser, one of: Riser 5x16+ML2: Five PCIe 3.0 x16 slots, all full-height half-length, all 75W One PCIe 3.0 x16 ML2 slot, full-height half-length, 30W (no NC-SI support) Riser 2x16: Two PCIe 3.0 x16 slots, all full-height half-length, both 75W Riser 4x8: Four PCIe 3.0 x8 slots, full-height half-length, all 75W Slot 16-17 on a riser: PCIe 3.0 x8 low profile, 75W PCIe 3.0 x8 low profile, 75W Additional internal PCIe slots: One or two PCIe 3.0 x8 slots for storage adapters M.2 adapter slot
Ports	Front: two USB 2.0 ports (one also for XCC local management), and one VGA video port. Rear: two USB 3.0, one VGA video, one DB-9 serial, and one 1 GbE RJ-45 systems management. The serial port can be shared with the XCC for serial redirection functions. Only one VGA port can be used at a time.
Cooling	Up to 12 redundant hot-swap single-rotor fans, 6 in each compute tray. Each tray has N+1 fan redundancy.
Power supply	Up to four redundant hot-swap 1100 W or 1600 W power supplies (80 PLUS Platinum certified), supporting 200-240 V AC input. The 1100 W power supply also supports 100-127V AC input supply with a reduced capacity of 1050 W. No support for 240 V DC.
Hot-swap parts	Drives, power supplies, and fans.
Video	G200 graphics with 16 MB memory with 2D hardware accelerator, integrated into the XClarity Controller. Maximum resolution is 1920x1200 32bpp at 60Hz.
Security features	Power-on password, administrator's password, Trusted Platform Module (TPM), supporting TPM 1.2 or TPM 2.0. In China only, optional Trusted Cryptographic Module (TCM).
Systems management	XClarity Controller embedded management, XClarity Administrator centralized infrastructure delivery, XClarity Integrator plugins, and XClarity Energy Manager centralized server power management. XClarity Controller Enterprise functionality standard with the SR950. Light path diagnostics for local failure detection and reporting, with LCD diagnostic pull-out panel.
Operating systems	Microsoft Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, VMware ESXi. See the Operating system support section for specifics.
Limited warranty	One year or three-year (model dependent) customer-replaceable unit (CRU) and onsite limited warranty with 9x5 next business day (NBD).
Service and support	Optional service upgrades are available through Lenovo Services: 4-hour or 2-hour response time, 6-hour fix time, 1-year or 2-year warranty extension, software support for Lenovo hardware and some third-party applications.
Dimensions	Height: 173 mm (6.8 in.); depth EIA flange to rear: 800.0 mm (31.5 in.), depth overall: 835.0 mm (32.9 in.); width across top cover: 447.0 mm (17.6 in.), width to EIA flanges: 482.0 mm (19.0 in.).
Weight	Minimum configuration: 32.6 kg (71.9 lb), Maximum configuration: 58.7 kg (129.4 lb)

The server is shipped with the following items:

Rail kit
Documentation flyer
Power cords (model and region dependent)

Models

The following tables list the available models, grouped by region.

Refer to the Specifications section for information about standard features of the server.

Common to all models:

All models include a rail kit.
One power cord is included for each power supply configured:
- All models for India include 2.8m, 10A/250V, C13 to IS 6538 Line Cords
- For other countries:
  - Models with 1600W power supplies include 2.8m, 10A/100-250V, C13 to C14 Jumper Cords
  - Models with 1100W power supplies include 2.8m, 13A/100-250V, C13 to C14 Jumper Cords