Lenovo ThinkSystem SN550 Server

The Lenovo ThinkSystem SN550 is a high-performance server that offers enhanced security, efficiency, and reliability features to handle business-critical workloads. The blade server incorporates up to two Intel Xeon Processor Scalable Family of processors. The processors feature up to 28 cores each and use Lenovo TruDDR4 memory, which runs at speeds up to 2666 MHz.

Suggested uses: database, virtualization, enterprise applications, collaboration and email, streaming media, Web, HPC, and cloud applications.

Figure 1 shows the ThinkSystem SN550 server

Figure 1. Flex System SN550 server

The SN550 server uses the new Intel Xeon Scalable Bronze, Silver, Gold and Platinum processors and memory can now operate at speeds up to 2666 MHz. It also includes the next generation UEFI-based Lenovo XClarity Provisioning Manager for rapid system setup and diagnosis, and Lenovo XClarity Controller management processor for systems management and alerting. 

The ThinkSystem SN550 is a high-availability, scalable blade server that is optimized to support the next-generation microprocessor technology. It is ideally suited for medium and large businesses. This section describes the key features of the server.

Scalability and performance

The SN550 offers the following features to boost performance, improve scalability, and reduce costs:

• Up to 14 SN550 servers can be installed in one Flex System Enterprise chassis.
• Improves productivity by offering superior system performance with up to 28-core processors, up to 38.5 MB of L3 cache, two 10.4 GT/s Ultra Path Interconnect links and a Thermal Design Power (TDP) rating of up to 165W.
• Supports up to two processors, 56 cores, and 112 threads, which maximizes the concurrent execution of multi-threaded applications.
• Intelligent and adaptive system performance with energy-efficient Intel Turbo Boost Technology allows CPU cores to run at maximum speeds during peak workloads by temporarily going beyond 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.
• Intel Advanced Vector Extensions 512 (AVX-512) enable acceleration of enterprise-class workloads, such as databases and enterprise resource planning.
• Each processor has 6 memory channels with up 2 two DIMMs per channel running at up to 2666 MHz. 
• Up to 3 TB of memory capacity using 128 GB 3DS RDIMMs (requires a processor with an "M" suffix)
• Optional support for high-performance PCIe-attached NVMe Flash Storage solid-state drives (SSDs) can significantly improve I/O performance.
• Embedded 4-port 10Gb Intel adapter built into the system board is based on the Intel Ethernet Connection X722 network controller.
• With Intel Integrated I/O Technology, the PCI Express 3.0 controller is integrated into the Intel Xeon processor Scalable family. This integration helps to dramatically reduce I/O latency and increase overall system performance.
• Support for high-bandwidth I/O adapters; up to two in each SN550 server.
• Support for 40 Gb Ethernet, 16 Gb Fibre Channel, and FDR InfiniBand.
• High-speed USB 3.0 port for connectivity to external devices.

Availability and serviceability

The SN550 provides the following features to simplify serviceability and increase system up-time:

• 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.
• Tool-less cover removal provides easy access to upgrades and serviceable parts, such as CPU, memory, and adapter cards.
• The Dual M.2 Boot Adapter supports RAID-1 which enables two installed M.2 drives to be configured as a redundant pair.
• Hot-swap drives support integrated RAID-1 redundancy for data protection and greater system up-time.
• Solid-state drives (SSDs), which offer significantly better reliability than mechanical HDDs for greater uptime. 
• The power source independent light path diagnostics functionality provides individual LEDs that lead the technician to failed (or failing) components, which simplifies servicing, speeds up problem resolution, and helps improve system availability.
• The built-in XClarity Controller continuously monitors system parameters, triggers alerts, and performs recovery actions in case of failures to minimize downtime.
• Proactive Platform Alerts (including PFA and SMART alerts): Processors, voltage regulators, memory, internal storage (SAS/SATA HDDs and SSDs, NVMe SSDs, flash storage adapters), RAID controllers, and server ambient and sub-component temperatures. Alerts can be surfaced through the system 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.
• Built-in diagnostics in UEFI with Lenovo XClarity Provisioning Manager that supports the collection of service data to USB key drive or remote CIFS share folder for troubleshooting and reduced service time.
• Auto-restart 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 customer replaceable unit and on-site limited warranty; next business day 9x5. Optional service upgrades are available.

Manageability and security

The following powerful systems management features simplify the local and remote management of the SN550:

• Support for Lenovo XClarity Administrator, providing auto-discovery, inventory tracking, monitoring, policy-based firmware updates, address pool management, configuration patterns and operating system installation.
• The server includes an XClarity Controller (XCC) to monitor server availability and perform remote management. XCC Enterprise is supported as standard, which enables remote KVM, mounting of remote media files (ISO and IMG image files), boot capture, and power capping.
• 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
• Integrated Trusted Platform Module (TPM) 2.0 support enables advanced cryptographic functionality, such as digital signatures and remote attestation.
• Supports Secure Boot to ensure only a digitally signed operating system can be used. Supported with HDDs and SSDs as well as M.2 SSD.
• 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.
• Industry-standard Advanced Encryption Standard (AES) NI support for faster, stronger encryption.
• Intel Execute Disable Bit functionality can help prevent certain classes of malicious buffer overflow attacks when combined with a supporting operating system.
• Intel Trusted Execution Technology provides enhanced security through hardware-based resistance to malicious software attacks, which allows an application to run in its own isolated space that is protected from all other software that is running on a system.

Figure 2 shows the front of the server.

Figure 2. Front view of the Flex System SN550 Compute Node

Figure 3 shows the locations of key components inside the server.

Figure 3. Inside view of the Flex System SN550 server

The following figure shows the architectural block diagram of the SN550, showing the major components and their connections.

Figure 4. SN550 system architectural block diagram

The following table lists the standard specifications.

Table 1. Standard specifications

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

• Models for Australia and New Zealand
• Models for South East Asian countries (ASEAN)
• Models for Brazil
• Models for EMEA countries
• Models for Hong Kong, Taiwan, Korea (HTK)
• Models for India
• Models for Japan
• Models for Latin American Countries (except Brazil)
• Models for USA and Canada

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

Models for India

† Processor detail: Quantity, model, core count, TDP, core frequency
* Models with 4x10GbE include a Fabric Connector which routes the embedded X722 10Gb Ethernet controller to I/O slot 1. The Fabric Connector precludes the use of an I/O adapter in slot 1.

The SN550 server is supported in the Flex System chassis as listed in the following table.

Table 11. Chassis support

Up to 14 SN550 servers can be installed in the chassis; however, the actual number that can be installed in a chassis depends on the following factors:

• TDP power rating for the processors that are installed in the SN550
• Number of power supplies that are installed in the chassis
• Capacity of the installed power supplies (2100 W or 2500 W)
• Chassis power redundancy policy that is used (N+1 or N+N)

The following table provides guidelines about what number of SN550 servers can be installed. For more information, use Lenovo Capacity Planner, which is found at the following web page:
https://datacentersupport.lenovo.com/us/en/products/solutions-and-software/software/lenovo-capacity-planner/solutions/ht504651

The following color coding was used In the table:

• Green = No restriction on the number of SN550 servers that can be installed
• Yellow = Some bays must be left empty in the chassis

Table 12. Maximum number of SN550 servers that can be installed based on installed power supplies and power redundancy policy used

The SN550 supports the Intel Xeon Processor Scalable Family options that are listed in the following table. The server supports one or two processors. 

With two processors installed, the processors are connected together using two UPI links. Processors with a T suffix are those that have more robust thermal characteristics (higher T-case). Processors with an M suffix support support greater than 768 GB per processor.

* All Gold 5000-level processors, except the 5122, support 2400 MHz memory speeds and have one AVX-512 512-bit FMA units. The 5122 processor supports 2666 MHz and has two FMA units
** L3 cache is 1.375 MB per core except with the processor indicated with ** where the cache size is larger

The SN550 uses Lenovo TruDDR4 memory operating at speeds up to 2666 MHz. All DIMMs can operate at a speed of 2666 MHz, both at 1 DIMM per channel and 2 DIMMs per channel. However, if the processor selected has a lower memory bus speed (eg 2400 MHz), then all DIMMs will operate at that lower speed.

TruDDR4 Memory uses the highest quality components that are sourced from Tier 1 DRAM suppliers and only memory that meets the strict requirements of Lenovo is selected. It is compatibility tested and tuned on every ThinkSystem server to maximize performance and reliability. TruDDR4 Memory has a unique signature that is programmed into the DIMM that enables ThinkSystem servers to verify whether the memory that is installed is qualified and supported by Lenovo.

From a service and support standpoint, Lenovo TruDDR4 memory automatically assumes the Lenovo system warranty and Lenovo provides service and support worldwide.

The following table lists the memory options that are available for the SN550 server.

The following rules apply when selecting the memory configuration:

• The server supports RDIMMs, LRDIMMs and 3DS RDIMMs. UDIMMs are not supported.
• Mixing RDIMMs and LRDIMMs is not supported.
• Mixing 3DS RDIMMs with either RDIMMs or LRDIMMs is not supported
• Mixing x4 and x8 DIMMs is supported.
• For best performance, populate memory DIMMs in quantities of 6 or 12 per processor, so that all memory channels are used.
• A configuration of more than 768 GB of memory per processor requires processor(s) with an "M" suffix

For best performance, consider the following:

• Populate memory DIMMs in quantities of 6 or 12 per processor, so that all memory channels are used.
• When mixing 16 GB and 32 GB DIMMs in the same configuration, use 16GB 2Rx8 DIMMs instead of 16 GB 1Rx4 DIMMs for better performance.
• Populate memory channels so they all have the same total memory capacity
• Ensure all memory controllers on a processor socket have the same DIMM configuration.
• All processor sockets on the same physical server should have the same DIMM configuration.

The following memory protection technologies are supported:

• ECC
• SDDC (for x4-based memory DIMMs; look for "x4" in the DIMM description)
• ADDDC (for x4-based memory DIMMs; Gold and Platinum processors only)
• Memory channel mirroring
• Memory rank sparing

If memory channel mirroring is used, then DIMMs must be installed in pairs or sets of three (minimum of one pair or set of three per processor), and all DIMMs in the pair or set of three must be identical in type and size. 50% of the installed capacity is available to the operating system.

If memory rank sparing is used, then a minimum of one quad-rank DIMM or two single-rank or dual-rank DIMMs must be installed per populated channel (the DIMMs do not need to be identical). In rank sparing mode, one rank of a DIMM in each populated channel is reserved as spare memory. The largest rank in the channel will be automatically selected as the spare rank. The amount of memory available to the operating system depends on the number, capacity and rank counts of the DIMMs installed.

The SN550 server has two 2.5-inch hot-swap drive bays that are accessible from the front of the blade server (see Figure 2). Depending on server configuration and installed backplane, these bays connect to either the included 6 Gbps SATA controller, optional Lenovo RAID controllers or directly to PCIe lanes for NVMe drives.

In addition, the SN550 can also support one or two M.2 form factor SSD drives on a separate adapter. The following table lists the supported M.2 adapters (enablement kits). For more information, see the ThinkSystem M.2 Drives and M.2 Adapters product guide: https://lenovopress.com/lp0769

Virtualization support: The integrated SATA controller can be used with virtualization hypervisors, including VMware ESXi, Linux KVM, Xen, and Microsoft Hyper-V. However, support is limited to AHCI (non-RAID) mode. RSTe mode is not supported with virtualization hypervisors.

* The ThinkSystem M.2 Enablement Kit is available configure-to-order only; not available as a standalone option
** See the note below regarding configuring a server with the DCSC configurator.

Supported drives are listed in the Internal drive options section. 

** Note: When configuring the SN550 using the Data Center Solution Configurator (DCSC), the following rule must be followed:

• When building a configuration with the ThinkSystem M.2 Enablement Kit (feature AUMU), the base Lenovo ThinkSystem SN550 Server R2 (feature B203) must be selected
• When building a configuration with the ThinkSystem M.2 with Mirroring Enablement Kit (feature AUMV), the base Lenovo ThinkSystem SN550 Server (feature AUXP) must be selected

When building a configuration without any M.2 adapter included, you can select either base (B203 or AUXP), however selecting the R2 base (B203) will allow you to install either M.2 adapter as a field upgrade. The following table summarizes the supported and orderable combinations.

Controllers for Internal Storage

In addition to the optional M.2 RAID-1 enabled adapter, the SN550 supports 3 different RAID controllers as shown in the table below.

Both the 530-4i and 930-4i replace the onboard SATA controller in the server and support high-performance RAID-0 and RAID-1 to the two internal 2.5-inch drive bays. These controllers are installed at the front of the server over the top of the drive bays.

The following figure shows the ThinkSystem RAID 530-4i adapter for the SN550 blade server. Note that the plastic frame in the lower right of the adapter is part of the mechanism that attaches the adapter to the server; this adapter does not support a supercapacitor.

Figure 5. ThinkSystem RAID 530-4i 2 Drive Adapter 

The following tables list the hard disk drive and solid-state drive options for the internal disk storage of the server.

• Table 17: 2.5-inch hot-swap 12 Gb SAS HDDs
• Table 18: 2.5-inch hot-swap 6 Gb SAS/SATA HDDs
• Table 19: 2.5-inch hot-swap 12 Gb SAS SSDs
• Table 20: 2.5-inch hot-swap 6 Gb SAS/SATA SSDs
• Table 21: 2.5-inch U.2 NVMe SSDs
• Table 22: M.2 drives

The server supports booting from a hypervisor installed on an M.2 solid-state drive. See the M.2 drives section for details and the list of available options.

VMware ESXi is available as a factory installed option for M.2 drives.  Feature codes are listed below.

The server does not support an internal tape drive. However, it can be attached to external tape drives by using Fibre Channel connectivity.

The server does not support an internal optical drive option, however, you can connect an external USB optical drive. See https://datacentersupport.lenovo.com/us/en/solutions/pd011281 for information about available external optical drives from Lenovo. Alternatively, use the remote media feature of the XClarity Controller and the Chassis Management Module.

The SN550 includes an embedded 4-port 10Gb Intel controller built into the system board. Each SN550 model that uses the embedded Intel controller also has the Fabric Connector installed in I/O connector 1 to provide connectivity to the Flex system chassis midplane. The feature code for the Fabric Connector is AUYN. Figure 3 shows the location of the Fabric Connector.

The Adapter to I/O bay correspondence table shows how the 4 ports of the embedded controller connect through the Fabric Connector to the corresponding switch ports. The Fabric Connector can be removed, if required, to allow the installation of an I/O adapter on I/O connector 1.

The embedded 10Gb controller is based on the Intel Ethernet Connection X722 network controller which is part of the Intel C624 "Lewisburg" PCH chipset of the SN550 and other Lenovo ThinkSystem servers.

The Intel X722 controller is optimized for data center, cloud, and mobile applications and includes the following features:

• VXLAN/NVGRE Hardware Offloads: These stateless offloads preserve application performance for overlay networks. With these offloads, it is possible to distribute network traffic across CPU cores. At the same time, the controller offloads LSO, GSO, and checksum from the host software, which reduces CPU overhead.
• Low latency: Intel Ethernet Flow Director delivers hardware-based application steering and Intel Data Direct I/O makes the processor cache the primary destination and source of I/O data rather than main memory.
• Virtualization performance: With Intel Virtualization Technology (VT), the controller delivers outstanding I/O performance in virtualized server environments. The controller reduces I/O bottlenecks by providing intelligent offloads for networking traffic per virtual machine (VM), which enables near-line rate speeds for small packets and supports almost an unlimited amount of isolated traffic flows so that you can scale your cloud environment.
• Next-generation VMDq: The controller supports up to 128 VMDq VMs and offers enhanced Quality of Service (QoS) by providing weighted round-robin servicing for the Tx data. The controller offloads the data-sorting functionality from the hypervisor to the network silicon, which improves data throughput and CPU usage.
• SR-IOV implementation: Provides an implementation of the PCI-SIG standard for I/O Virtualization. The physical configuration of each port is divided into multiple virtual ports. Each virtual port is assigned to an individual VM directly by bypassing the virtual switch in the Hypervisor, which results in near-native performance.
• iWarp RDMA support implements kernel bypass and direct data placement and allows for more efficient high-speed networking by eliminating queues and network related interrupts
• VM load balancing: Provides traffic load balancing (Tx and Rx) across VMs that are bound to the team interface. It also provides fault tolerance if a switch, port, or cable fails or is disconnected.
• Auto-detect (PnP) feature for the LOM adapters, enabling you to change speed (eg from a 1Gb LOM to 10 Gb LOM) and the network interface will automatically reconfigure during the boot process.

Note: The onboard Ethernet controller does not support 10 Mb or 100 Mb Ethernet connections.

The SN550 has two I/O expansion connectors for attaching I/O adapter cards. The I/O expansion connectors use a high-density, 216-pin PCIe connection. Installing I/O adapter cards allows the server to connect with switch modules in the chassis. Each slot has a PCI Express 3.0 x16 host interface and both slots support the same form-factor adapters.  If the SN550 has a Fabric Connector in adapter slot 1, it must be removed first to use that slot for an optional I/O adapter.

The following figure shows the location of the I/O expansion connectors.

Figure 6. Location of the I/O adapter slots in the ThinkSystem SN550 server

A compatible switch or pass-through module must be installed in the corresponding I/O bays in the chassis, as indicated in the following table. Installing two switches means that all ports of the adapter are enabled, which improves performance and network availability.

Table 25. Adapter to I/O bay correspondence

The following figure shows the location of the I/O module bays in the Flex System Enterprise Chassis.

Figure 7. Location of the I/O module bays in the Flex System Enterprise Chassis

The following figure shows how adapters are connected to I/O modules that are installed in the chassis.

Figure 8. Logical layout of the interconnects between I/O adapters and I/O modules

In addition to the embedded Intel 4-port 10Gb controller (model specific), the SN550 supports other network adapters that can be installed in IO slots.

The following table lists the supported network adapters and upgrades. Adapters can be installed in either slot. However, compatible I/O modules must be installed in the corresponding bays of the chassis.  

FCoE and iSCSI support: ThinkSystem server adapters do not support Features on Demand, so the CN4052S and CN4054S 2-port 10Gb basic adapters cannot be upgraded to FCoE support. If you need FCoE or iSCSI support use the 01CV780 or 01CV790 adapters.

For more details about these adapters, see the Lenovo Press product guides in the Network adapters category: https://lenovopress.com/servers/blades/nic

For more information about adapter-to-switch compatibility, see the Flex System Interoperability Guide:
http://lenovopress.com/fsig

The following table lists storage HBAs that are supported by the SN550. Storage HBAs are supported in both slots, however for CTO orders, an HBA is installed only in slot 2.

Table 27. Storage adapters

For details about these adapters, see the Lenovo Press product guides in the Storage adapters category: https://lenovopress.com/servers/blades/hba

For more information about adapter-to-switch compatibility, see the Flex System Interoperability Guide:
http://lenovopress.com/fsig

Power to the blade server is derived from the power supplies that are installed in the chassis. There are no server options regarding power supplies.

The server contains an integrated service processor, XClarity Controller (XCC), which provides advanced service-processor control, monitoring, and alerting functions. The XCC is based on the Pilot4 XE401 baseboard management controller (BMC) using a dual-core ARM Cortex A9 service processor.

Local management

As shown in Figure 2, the SN550 front panel includes a USB port, status indicators, a button to enable management via the USB port and a console breakout cable port. The breakout cable supplied with the chassis provides serial, video and a USB port for connecting a local console. The USB ports on the breakout cable support keyboard and mouse; storage devices are not supported.

System status with XClarity Mobile

The Lenovo XClarity Mobile (LXCM) app now includes a tethering function where you can connect your Android or iOS device to the server via USB to see the status of the server.

The steps to connect the mobile device are as follows:

1. Enable USB Management on the server, by pressing and holding for 3 seconds the dedicated USB management button on the front of the server.
2. Connect the mobile device via a USB cable to the server's USB port with the management symbol 
3. In iOS or Android settings, enable Personal Hotspot or USB Tethering
4. Launch the Lenovo XClarity Mobile app

Light Path Diagnostics

The SN550 includes light path diagnostics. If an environmental condition exceeds a threshold or if a system component fails, XCC lights LEDs inside the server to help you diagnose the problem and find the failing part.

For quick problem determination when you are physically at the server, the server offers the following three-step guided path:

• Illuminate the fault LED on the front panel. 
• Identify the fault in the light path diagnostics panel, as shown in the following figure.
• If a DIMM is faulty, the LED next to it is illuminated.

The SN550 light path diagnostics panel is inside the server near the front panel, as shown in the following figure.

Figure 9. Location of SN550 light path diagnostics panel

To illuminate the light path diagnostics LEDs, power off the server, slide it out of the chassis, and press and hold the power button. The power button doubles as the light path diagnostics reminder button when the server is removed from the chassis.

The meanings of the LEDs in the light path diagnostics panel are listed in the following table.

Table 28. Light path diagnostic panel LEDs

The front of the server also houses an information pull-out tab. See Figure 2 for the location. A label on the tab shows the network information (MAC address and other data) to remotely access XClarity Controller.

Remote management

Lenovo XClarity Controller (XCC) is an all-new embedded management engine common in every ThinkSystem server. 

There are two ways to access the management processor:

• Command-line interface. To access the CLI interface, use SSH to log in to the management processor.

• Web-based interface. To access the web-based interface, point your browser to the IP address for the management processor. The new intuitive interface includes at-a-glance visualizations and simple access to common system actions.  The dashboard is shown in the following figure. 

Figure 10. Lenovo XClarity Controller dashboard

Virtual presence (remote control) and virtual media capability also come standard in the SN550. The remote control functions include the following:

• Remotely viewing video with graphics resolutions up to 1600x1200 at 75 Hz with up to 32 bits per pixel, regardless of the system state
• Remotely accessing the server using the keyboard and mouse from a remote client
• Capturing blue-screen errors
• International keyboard mapping support
• LDAP-based authentication
• Remote mounting of ISO and diskette IMG image files as virtual drives that are available for use by the server

• Boot Capture
• Virtual console collaboration - Ability for up to 6 remote users to be log into the remote session simultaneously
• Power capping

Lenovo XClarity Energy Manager

Lenovo XClarity Energy Manager (LXEM) is an agent-less, web-based console that provides power management for ThinkServer, System x and ThinkSystem servers. It enables server density and data center capacity to be increased through the use of power capping.

LXEM is a licensed product. A single-node LXEM license is included with the XClarity Controller Enterprise (XCC Enterprise) version. Because the Enterprise version of XCC is standard in the SN550, a license for XClarity Energy Manager is included.  For more information on LXEM, please see the User Guide: http://datacentersupport.lenovo.com/us/en/downloads/ds101160

Lenovo XClarity Administrator

Lenovo XClarity Administrator is a centralized resource management solution designed to reduce complexity, speed response, and enhance the availability of Lenovo systems and solutions.

Lenovo XClarity Administrator provides agent-free hardware management for ThinkSystem servers, in addition to ThinkServer, System x, and Flex System servers. The administration dashboard is based on HTML 5 and allows fast location of resources so tasks can be run quickly.

Because Lenovo XClarity Administrator does not require any agent software to be installed on the managed endpoints, there are no CPU cycles spent on agent execution, and no memory is used, which means that up to 1GB of RAM and 1 - 2% CPU usage is saved, compared to a typical managed system where an agent is required.

For more information about Lenovo XClarity Administrator, including ordering part numbers, see the Lenovo XClarity Administrator Product Guide:
https://lenovopress.com/tips1200-lenovo-xclarity-administrator

The server offers the following security features:

• Administrator and power-on password
• Trusted Platform Module (TPM) supporting both TPM 1.2 and TPM 2.0
• Optional plugin Trusted Cryptographic Module (TCM) or Nationz TPM, available only in China

The plugin modules, available only for China customers, are installed in a dedicated socket on the system board, as shown in Figure 3. Ordering information is shown in the following table.

* Available configure-to-order or pre-configured models only; Not available as a field upgrade.

The server supports the following operating systems:

• Microsoft Windows Server 2012 R2
• Microsoft Windows Server 2016
• Microsoft Windows Server, version 1709
• Microsoft Windows Server, version 1803
• Red Hat Enterprise Linux 6.10 x64
• Red Hat Enterprise Linux 6.9 x64
• Red Hat Enterprise Linux 7.3
• Red Hat Enterprise Linux 7.4
• Red Hat Enterprise Linux 7.5
• SUSE Linux Enterprise Server 11 Xen x64 SP4
• SUSE Linux Enterprise Server 11 x64 SP4
• SUSE Linux Enterprise Server 12 SP2
• SUSE Linux Enterprise Server 12 SP3
• SUSE Linux Enterprise Server 12 Xen SP2
• SUSE Linux Enterprise Server 12 Xen SP3
• VMware ESXi 6.0 U3
• VMware ESXi 6.5
• VMware ESXi 6.5 U1
• VMware ESXi 6.5 U2
• VMware ESXi 6.7

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=sn550-7x16

The server features the following dimensions and weight (approximate):

• Height: 55.5 mm (2.2 in)
• Depth: 492.7 mm (19.4 in)
• Width: 215.5 mm (8.5 in)
• Maximum weight: 7.1 kg (15.6 lb)

The Lenovo ThinkSystem SN550 server complies with ASHRAE Class A3 specifications. System performance may be impacted when operating temperature is above ASHRAE A3 specification or fan failed condition.

• Air temperature:
  • Operating:
    • ASHRAE Class A2: 10 °C - 35 °C (50 °F - 95 °F); decrease the maximum ambient temperature by 1 °C for every 300 m (984 ft) increase in altitude above 900 m (2,953 ft)
    • ASHRAE Class A3: 5 °C - 40 °C (41 °F - 104 °F); decrease the maximum ambient temperature by 1 °C for every 175 m (574 ft) increase in altitude above 900 m (2,953 ft)
  • Server off: 5°C to 45°C (41°F to 113°F)
  • Shipment/Storage: -40 °C to 60 °C (-40 °F to 140 °F)
• Maximum altitude: 3,050 m (10,000 ft)
• Relative Humidity (non-condensing):
  • Operating:
    • ASHRAE Class A2: 8% - 80%, maximum dew point: 21°C (70°F)
    • ASHRAE Class A3: 8% - 85%, maximum dew point: 24°C (75°F)
  • Shipment/Storage: 8% - 90%

The ThinkSystem SN550 (machine type 7X16) has a 3-year warranty.

The standard warranty terms are customer-replaceable unit (CRU) and onsite (for field-replaceable units, FRUs, only) with standard call center support during normal business hours and 9x5 Next Business Day Parts Delivered.

Also available are Lenovo Services warranty maintenance upgrades and post-warranty maintenance agreements, with a predefined scope of services, including service hours, response time, term of service, and service agreement terms and conditions.

• Committed Repair Service

  Committed Repair Services enhances the level of Warranty Service Upgrade or Post Warranty/Maintenance Service offering associated with the selected systems. Offerings vary and are available in select countries.

  • Priority handling to meet defined time frames to restore the failing machine to good working condition
  • 24x7x6 committed repair: Service performed 24 hours per day, 7 days per week, within 6 hours
• YourDrive YourData

  Lenovo’s YourDrive YourData service is a multi-drive retention offering that ensures your data is always under your control, regardless of the number of drives that are installed in your Lenovo server. In the unlikely event of a drive failure, you retain possession of your drive while Lenovo replaces the failed drive part. Your data stays safely on your premises, in your hands. The YourDrive YourData service can be purchased in convenient bundles with Lenovo warranty upgrades and extensions.

• Microcode Support

  Keeping microcode current helps prevent hardware failures and security exposure. There are two levels of service: analysis of the installed base and analysis and update where required. Offerings vary by country and can be bundled with other warranty upgrades and extensions.

• Enterprise Software Support

  Lenovo Enterprise Server Software Support can help you troubleshoot your entire server software stack. Choose support for server operating systems from Microsoft, Red Hat, SUSE, and VMware; Microsoft server applications; or both operating systems and applications. Support staff can help answer troubleshooting and diagnostic questions, address product compatibility and interoperability issues, isolate causes of problems, report defects to software vendors, and more.

  In addition, you can access hardware “how to” support for ThinkSystem servers. Staff can help resolve hardware problems not covered under warranty, refer you to the right documentation and publications, provide corrective service information for known defects, and transfer you to a hardware support call center if needed.

• Hardware Installation Services

  Lenovo experts can seamlessly manage the physical installation of your server, storage, or networking hardware. Working at a time convenient for you (business hours or off shift), the technician will unpack and inspect the systems on your 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 your team to focus on other priorities. Your new systems will be configured and ready for your software installation.

The server conforms to the following standards:

• ASHRAE Class A3
• FCC - Verified to comply with Part 15 of the FCC Rules Class A
• Canada ICES-004, issue 3 Class A
• UL/IEC 60950-1
• CSA C22.2 No. 60950-1
• Japan VCCI, Class A
• IEC 60950-1 (CB Certificate and CB Test Report)
• Taiwan BSMI CNS13438, Class A; CNS14336
• Australia/New Zealand AS/NZS CISPR 22, Class A
• Korea KN22, Class A, KN24
• IEC 60950-1 (CB Certificate and CB Test Report)
• CE Mark (EN55022 Class A, EN60950-1, EN55024, EN61000-3-2,
• EN61000-3-3)
• TUV-GS (EN60950-1/IEC 60950-1, EK1-ITB2000)

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 of finance 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 in-depth understanding of your invoice and payment requirements. For you, this dedication provides a high-quality, 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:

http://www.lenovofs.com

For more information, see the following resources:

• ThinkSystem SN550 server product page
  http://www3.lenovo.com/us/en/p/77XX7FSFS55
• Interactive 3D Tour of the ThinkSystem SN550
  https://lenovopress.com/lp0668-3d-tour-thinksystem-sn550
• ThinkSystem SN550 drivers and support
  http://datacentersupport.lenovo.com/products/servers/thinksystem/sn550/7x16/downloads
• Flex System Information Center
  http://flexsystem.lenovofiles.com/help/index.jsp
• Operating System Interoperability Guide for SN550
  https://lenovopress.com/osig#servers=SN550&support=all
• Flex System Interoperability Guide
  http://lenovopress.com/fsig
• Support Portal for the SN550
  https://datacentersupport.lenovo.com/us/en/