Flex System Enterprise ChassisProduct Guide
Lenovo Flex System is the next generation of blade technology with more performance and bandwidth and far more capability to consolidate and virtualize than previous systems. Flex System is anchored by the Flex System Enterprise Chassis which enables high-speed performance with integrated servers and networking. Furthermore, its flexible design can meet the needs of varying workloads with independently scalable IT resource pools for higher utilization and lower cost per workload.
Changes in the August 21 update:
- The FC3171 8Gb SAN Switch is withdrawn from marketing
Flex System is the next generation of blade technology with more performance and bandwidth and far more capability to consolidate and virtualize than previous systems. Flex System is anchored by the Flex System Enterprise Chassis which enables high-speed performance with integrated servers and networking. Furthermore, its flexible design can meet the needs of varying workloads with independently scalable IT resource pools for higher utilization and lower cost per workload.
The Flex System Enterprise Chassis is shown in Figure 1.
Figure 1. The Flex System Enterprise Chassis
Did you know?
In addition to the Flex System Enterprise Chassis, Lenovo also offers the Carrier-Grade Chassis for installations requiring tolerance to higher temperatures or for use in environments without filtered air. For information about the Carrier-Grade Chassis, see https://lenovopress.com/tips1285.
The Flex System Enterprise Chassis is a simple, integrated infrastructure platform that supports a mix of compute, storage, and networking resources to meet the demands of your applications. The solution is easily scalable with the addition of another chassis with the required nodes. With Lenovo XClarity Administrator, multiple chassis can be monitored from a single screen. This flexible 14 node, 10U chassis is designed for a simple deployment now and to scale to meet your needs in the future.
Flexibility and efficiency
The 14 bays in the chassis allow the installation of compute or management nodes, with networking modules in the rear. A single chassis or a group of chassis can be fully customized to the specific needs of the computing environment. IT can meet the needs of the business using a single system across multiple operating environments.
The system monitors and manages power usage on all major chassis components so you have total control over power consumption. Available power supply options are AC and -48V DC. AC power options can be configurable in either a single or three-phase power domain. The chassis supports N+N or N+1 redundant power supplies and an entirely passive mid-plane to meet your reliability needs. The power supplies are 80 PLUS Platinum-certified indicating high energy efficiency. The chassis design also optimizes cooling with cooling zones within the chassis. The system manages the fan modules based on node configuration within the chassis. So, the system can increase the speed of certain fan modules to cool potential hot spots, and use lower speeds for other fan modules where appropriate.
Easily scalable with simple administration
Because the Flex System Enterprise Chassis is an all-in-one solution, it is designed for growth from a single chassis to many. Adding compute, or networking capability is as simple as adding additional nodes or modules. Compute nodes and I/O modules connect to a midplane and are designed to be inserted or removed while the chassis is running. The use of the midplane means that the compute nodes and I/O modules do not need their own power cables and do not need network cables or transceivers to connect to each other within the chassis. These features make it easy to add or replace compute nodes and get them operational quickly.
The simple, highly integrated management system allows you to use the Chassis Management Modules integrated into each chassis to administer a single chassis, and the new Lenovo XClarity Administrator offers agent-free hardware management for compute nodes and networking.
Designed for multiple generations of technology
The Flex System Enterprise Chassis is designed to be the foundation of your IT infrastructure now and into the future. Compute performance requirements are always on the rise and networking demands continue to grow with rising bandwidth needs and a shrinking tolerance for latency. The chassis is designed to scale to meet the needs of your future workloads, offering the flexibility to support current and future innovations in compute, storage, and networking technology.
Locations of key components and connectors
The following figure shows the front of the Enterprise Chassis.
Figure 2. Front of the Flex System Enterprise Chassis
The following figure shows the rear of the Enterprise Chassis.
Figure 3. Rear of the Flex System Enterprise Chassis
The following table lists the standard specifications.
Table 1. Standard specifications
|Firmware||Chassis with first generation Chassis Management Module (68Y7030): IBM-signed firmware
Chassis with Chassis Management Module 2 (00FJ669): Lenovo-signed firmware
|Form factor||10U rack-mounted unit.|
|Maximum number of compute nodes||14 half-wide (single bay), seven full-wide (two bays), three double-height full-wide (four bays) or one quadruple-height full-wide (8 bays). Mixing is supported.|
|Chassis per 42U rack||Four.|
|Nodes per 42U rack||56 half-wide, or 28 full-wide.|
|Management||Chassis Management Modules 2 (CMM2) modules provide chassis management. One or two CMM2s standard, depending on the model and the use of two provides redundancy. Earlier models of the Enterprise Chassis use the first generation CMM. The CMM2 interfaces with the integrated management module (IMM2) integrated in each compute node in the chassis. Optional Lenovo XClarity Administrator for hardware resource management with integrators to VMware vCenter and Microsoft System Center, including virtualization, networking, and storage management. Chassis with first generation CMM can be upgraded to CMM2 however CMM and CMM2 cannot be mixed.|
|I/O architecture||Up to eight lanes of I/O to an I/O adapter card, with each lane capable of up to 25 Gbps bandwidth. Up to 16 lanes of I/O to a half-wide node with two adapters. A wide variety of networking solutions, including Ethernet, Fibre Channel, Fibre Channel over Ethernet (FCoE), and InfiniBand.|
|Power supplies||Up to six power supplies that can provide N+N or N+1 redundant power. AC power supplies are 80 PLUS Platinum certified and provide over 94% efficiency at 50% load and 20% load. Each power supply contains two independently powered 40 mm cooling fan modules. Power supply options are 2500W AC and 2500W -48V DC power supplies. All installed power supplies must be identical.|
|Fan modules||Ten fan modules (eight 80 mm fan modules and two 40 mm fan modules); Four 80 mm and two 40 mm fan modules standard.|
|Dimensions||Height: 440 mm (17.3 in)
Width: 447 mm (17.6 in)
Depth: 800 mm (31.5 in) (measured from front bezel to rear of chassis), 840 mm (33.1 in) (measured from node latch handle to the power supply handle)
|Weight||Minimum configuration: 96.62 kg (213 lb)
Maximum configuration: 220.45 kg (486 lb)
|Sound level||7.5 bels (declared)|
|Temperature||Operating air temperature 5°C to 40°C|
|Electrical power||AC Input power: 200 - 240 V ac (nominal), 50 or 60 Hz
-48 V DC Input power: -48V to -60 V dc (nominal)
Minimum configuration: 0.51 kVA (two power supplies)
Maximum configuration: 13 kVA (six power supplies)
|Power consumption||12,900 watts maximum|
The following table lists what each standard model, Express model and TopSeller model includes. In addition, each model ships with:
- One C19 to C20 two-meter power cable for each power supply
- One Rack Mount Kit
The following table lists the specifications of the standard Enterprise Chassis models.
(used / max)
|8721-ALx||14||1x CMM2||0 / 4||None||2x 2500W||2||4||1|
|8721-DLx||14||1x CMM2||0 / 4||None||2x 2500W
|TopSeller models – North America|
|8721-E3U||14||2x CMM2||2 / 4||2x SI4093#||6x 2500W||2||8||1|
|8721-E4U||14||2x CMM2||2 / 4||2x CN4093#||6x 2500W||2||8||1|
|8721-E5U||14||1x CMM2||0 / 4||None||2x 2500W||2||4||1|
|TopSeller models – Latin America & Brazil|
|8721-E3U||14||2x CMM2||2 / 4||2x SI4093#||6x 2500W||2||8||1|
|8721-E4U||14||2x CMM2||2 / 4||2x CN4093#||6x 2500W||2||8||1|
* CMM1 = first generation Chassis Management Module (68Y7030), CMM2 = Chassis Management Module 2 (00FJ669)
† Model B1x includes two Flex System EN4023 10Gb Scalable Switches, 94Y5212 and two Flex System EN4023 10Gb Scalable Switch (FoD 3) upgrades, 47C9993. The FoD 3 upgrade enables FCoE on all active ports of the switches.
‡ Model B2x includes two Flex System EN4023 10Gb Scalable Switches, 94Y5212 and two Lenovo Flex System FC5022 24-port 16Gb SAN Scalable Switch, 00Y3324.
# Models E3U and E4U include two Flex System Fabric SI4093 System Interconnect Modules, 00FM518 or two Flex System Fabric CN4093 10Gb Converged Scalable Switches, 00FM510, respectively.
Supported compute nodes
The following table lists the compute nodes that are supported in the Flex System Enterprise Chassis. The table also lists the maximum number installable.
Supported in chassis
|8721 with CMM1
|8721 with CMM2
|Lenovo ThinkSystem servers|
|ThinkSystem SN550||7X16||Lenovo signed||No||Supported||14|
|ThinkSystem SN850||7X15||Lenovo signed||No||Supported||7|
|Lenovo Flex System compute nodes|
|Flex System x220||7906||IBM signed||Supported||Supported||14|
|Flex System x222||7916||IBM signed||Supported||Supported||14|
|Flex System x240||7162||Lenovo signed||No||Supported||14|
|Flex System x240||8737||IBM signed||Supported||Supported||14|
|Flex System x240 M5 (E5-2600 v3)||9532||Lenovo signed||Supported||Supported||14|
|Flex System x240 M5 (E5-2600 v4)||9532||Lenovo signed||No||Supported||14|
|Flex System x440||7917||IBM signed||Supported||Supported||7|
|Flex System x440||7167||Lenovo signed||Supported||Supported||7|
|Flex System x280 X6||7196||Lenovo signed||No||Supported||7|
|Flex System x480 X6||7196||Lenovo signed||Supported||Supported||7|
|Flex System x880 X6||7196||Lenovo signed||Supported||Supported||7|
|Flex System x280 X6||7903||IBM signed||Supported||Supported||7|
|Flex System x480 X6||7903||IBM signed||Supported||Supported||7|
|Flex System x880 X6||7903||IBM signed||Supported||Supported||7|
|Flex System Manager||8731-A1x||IBM signed||Supported||Supported||1**|
|IBM Power Systems servers|
|Flex System p24L||1457||IBM signed||Supported||No||14|
|Flex System p260||7895-22X||IBM signed||Supported||No||14|
|Flex System p270||7954-24X||IBM signed||Supported||No||14|
|Flex System p460||7895-42X||IBM signed||Supported||No||7|
† The maximum number of compute nodes supported depends on a number of factors. See below.
** A single Flex System Manager appliance can manage up to 16 chassis
The actual number of compute nodes systems that can be powered on in a chassis depends on these factors:
- The TDP power rating for the processors that are installed in the compute nodes (x86 servers)
- The number of power supplies installed in the chassis
- The capacity of the power supplies installed in the chassis (2100 W or 2500 W)
- The power redundancy policy used in the chassis (N+1 or N+N)
For the x480 X6 or x880 X6, if two compute nodes are scaled together, then a maximum of 3 scaled complexes can be installed. For the x880 X6, if four compute nodes are scaled together, then a maximum of 1 scaled x880 X6 complexes can be installed. Other bays can be filled with other compute nodes.
The table in the Power Supplies section provides guidelines about what number of compute nodes can be powered on in the Enterprise Chassis, based on the type and number of power supplies installed.
See ServerProven® for the latest information about the supported servers:
Supported I/O modules
The Flex System Enterprise Chassis has four high-speed switch bays that are capable of supporting a variety of I/O architectures.
The switches are installed in switch bays in the rear of the Flex System Enterprise Chassis as shown in the following figure. Switches are normally installed in pairs (bays 1 & 2, and bays 3 & 4), because I/O adapter cards installed in the compute nodes route to two switch bays for performance and redundancy.
Figure 4. Location of the switch bays in the Flex System Enterprise Chassis
The following table lists the switches that are supported by the chassis.
Note: Some switches are withdrawn from marketing.
Supported in chassis
|8721 with CMM
|8721 with CMM2
|25 Gb Ethernet module|
|ThinkSystem NE2552E Flex Switch||4SG7A08868||Lenovo†||No||Supported|
|40 Gb Ethernet module|
|EN6131 40Gb Ethernet Switch||90Y9346||Vendor||Supported||Supported|
|10 Gb Ethernet modules|
|EN4093R 10Gb Scalable Switch||00FM514||Lenovo†||No||Supported|
|CN4093 10Gb Converged Scalable Switch||00FM510||Lenovo†||No||Supported|
|SI4091 10Gb System Interconnect Module||00FE327||Lenovo†||No||Supported|
|SI4093 System Interconnect Module||00FM518||Lenovo†||No||Supported|
|EN4091 10Gb Ethernet Pass-thru||88Y6043||IBM†||Supported||Supported|
|EN4093 10Gb Scalable Switch||49Y4270*||IBM†||Supported||Supported|
|EN4093R 10Gb Scalable Switch||95Y3309*||IBM†||Supported||Supported|
|CN4093 10Gb Converged Scalable Switch||00D5823*||IBM†||Supported||Supported|
|SI4093 System Interconnect Module||95Y3313*||IBM†||Supported||Supported|
|Cisco Nexus B22 Fabric Extender||94Y5350||Vendor||Supported||Supported|
|EN4023 10Gb Scalable Switch||94Y5212*||Vendor||Supported||Supported|
|1 Gb Ethernet switch|
|EN2092 1Gb Ethernet Scalable Switch||49Y4294||IBM†||Supported||Supported|
|Fibre Channel switches|
|FC5022 16Gb SAN Scalable Switch||88Y6374||Vendor||Supported||Supported|
|FC5022 24-port 16Gb SAN Scalable Switch||00Y3324||Vendor||Supported||Supported|
|FC5022 24-port 16Gb ESB SAN Scalable Switch||90Y9356||Vendor||Supported||Supported|
|FC3171 8Gb SAN Switch||69Y1930*||Vendor||Supported||Supported|
|FC3171 8Gb SAN Pass-thru||69Y1934*||Vendor||Supported||Supported|
|IB6131 InfiniBand Switch (QDR/FDR)||90Y3450||Vendor||Supported||Supported|
* Withdrawn from marketing
† For these switches, IBM signed switch firmware is up to Version 7.x and Lenovo signed switch firmware is Version 8.x onwards
Each half-wide compute node (such as the ThinkSystem SN550) has two adapter slots, and each full-wide compute node (such as the ThinkSystem SN850) has four adapter slots. The adapter slots in each compute node route through the chassis midplane to the switch bays. The architecture supports up to eight ports per adapter.
The following figure shows how two-port adapters are connected to switches installed in the chassis.
Figure 5. Logical layout of the interconnects between two-port I/O adapters and I/O modules
A four-port adapter doubles the connections between each adapter and switch pair (for example, a four-port adapter in A1 in each compute node routes two connections to switch 1 and two connections to switch 2).
The following figure shows how four-port adapters are connected to switches that are installed in the chassis.
Figure 6. Logical layout of the inter-connections between four-port I/O adapters and I/O modules
The following table shows the connections between adapter slots in the compute nodes to the switch bays in the chassis.
- To make use of all four ports of a four-port adapter across all blade servers, the switch must have 28 internal ports enabled, and two switches must be installed in the bays as indicated.
- To make use of six ports of a eight-port adapter across all blade servers, the switch must have 42 internal ports enabled, and two switches must be installed in the bays as indicated. Ports 7 and 8 of an eight-port adapter are reserved for future use. The chassis supports all eight ports, but there are no switches that are available that connect to these ports.
|I/O adapter slot
in the server
|Port on the adapter*||
Corresponding I/O module bay
in the chassis
|Bay 1||Bay 2||Bay 3||Bay 4|
|Slot 1||Port 1||Yes||No||No||No|
|Port 3 (for 4 & 8-port cards)||Yes||No||No||No|
|Port 4 (for 4 & 8-port cards)||No||Yes||No||No|
|Port 5 (for 8-port cards)||Yes||No||No||No|
|Port 6 (for 8-port cards)||No||Yes||No||No|
|Port 7 (for 8-port cards)||Yes||No||No||No|
|Port 8 (for 8-port cards)||No||Yes||No||No|
|Slot 2||Port 1||No||No||Yes||No|
|Port 3 (for 4 & 8-port cards)||No||No||Yes||No|
|Port 4 (for 4 & 8-port cards)||No||No||No||Yes|
|Port 5 (for 8-port cards)||No||No||Yes||No|
|Port 6 (for 8-port cards)||No||No||No||Yes|
|Port 7 (for 8-port cards)||No||No||Yes||No|
|Port 8 (for 8-port cards)||No||No||No||Yes|
Chassis Management Module
The Chassis Management Module (CMM) provides single-chassis management in the Enterprise Chassis. The CMM is used to communicate with the integrated management module (IMM) controller in each compute node to provide system monitoring, event recording and alerts, and to manage the chassis, its devices, and the compute nodes.
The chassis has one CMM installed standard but supports two CMMs for redundancy. If one CMM fails, the second CMM can detect its inactivity and activate itself to take control of the system without any disruption. The CMM is central to the management of the chassis and is required in the Enterprise Chassis.
There are two versions of the Chassis Management Module available:
- Chassis Management Module 2 (00FJ669) -- contains a Trusted Platform Module (TPM) v2.0 chip and has a Lenovo-signed firmware codebase. This module is recommended for new installation.
- First generation Chassis Management Module (68Y7030) -- contains a Trusted Platform Module (TPM) v1.1 chip and has an IBM-signed firmware codebase
Standard and TopSeller models of the chassis contain either a CMM (68Y7030) or a CMM2 (00FJ669) as listed in Table 2. The selection of CMM determines which compute nodes and I/O modules are supported in the chassis. See Tables 3 and 4 respectively for details. You can replace a CMM with a CMM2, however mixing is not supported -- you cannot have a chassis with one CMM (68Y7030) and one CMM2 (00FJ669).
The following table shows the ordering information.
Table 6. Chassis Management Module
|Feature codes*||Description||Standard /
|68Y7030||A0TM / A0UE||Flex System Chassis Management Module||1 / 2|
|00FJ669||ASPT / ASQ8||Flex System Chassis Management Module 2||1 / 2|
* The first feature code corresponds to the base CMM installed in the chassis. The second feature code corresponds to the optional second CMM which provides redundancy.
The following figure shows the Chassis Management Module. See Figure 3 for the location of the CMM in the chassis.
Figure 7. Chassis Management Module
The CMM provides these functions:
- Power control
- Fan management
- Chassis and compute node initialization
- Switch management
- Diagnostics: chassis, I/O options, and compute nodes
- Resource discovery and inventory management
- Resource alerts and monitoring management
- Chassis and compute node power management
- Security policy management
- Role-based access control
- Support for up to 84 local CMM user accounts
- Support for up to 32 simultaneous sessions
The CMM has the following connectors:
- USB connection. This connection can be used for insertion of a USB media key for tasks, such as firmware updates.
- 10/100/1000 Mbps RJ45 Ethernet connection to connect to a management network. The CMM can be managed via this Ethernet port.
- Serial port (mini-USB) for local command-line interface (CLI) management. Use serial cable 90Y9338 for connectivity.
The CMM has the following light-emitting diodes (LEDs) that provide the following information:
- Power-on LED
- Activity LED
- Error LED
- Ethernet port link and port activity LEDs
The CMM also incorporates a reset button, which, when pressed, resets the CMM back to its default condition. It has two functions, depending on how long the button is pressed:
- When pressed for less than 5 seconds, the CMM restarts.
- When pressed for more than 5 seconds (for example, 10 or 15 seconds), the CMM configuration is reset to the manufacturing defaults, and then the CMM restarts.
The CMM supports a web-based graphical user interface (GUI) that provides a way to perform CMM functions within a supported web browser. You can also perform management functions through the CMM command-line interface (CLI). Both the web-based GUI and the CLI are accessible via the single RJ45 Ethernet connector on the CMM or from any other system that is connected to the same (management) network.
The CMM has the following default static IPv4 address. By default, the CMM is configured to respond to Dynamic Host Configuration Protocol (DHCP) first before using its static IPv4 address:
- IP address: 192.168.70.100
- Subnet: 255.255.255.0
- User ID: USERID (all capital letters)
- Password: PASSW0RD (all capital letters, with a zero instead of the letter O)
The CMM does not have a fixed static IPv6 IP address, by default. Initial access to the CMM in an IPv6 environment can be performed by either using the IPv4 IP address or the IPv6 link-local address. The IPv6 link-local address is automatically generated based on the Media Access Control (MAC) address of the CMM.
The CMM is the key component enabling the integrated management network. Internally, the CMM has a multiple port L2 1Gigabit Ethernet switch with dedicated links to all 14 node bays, all four switch bays, and the second CMM, if installed. These connections are all point-to-point, ensuring dedicated bandwidth. The 1GbE links are full-duplex, fixed speed (not auto-negotiate) links. The 1 GbE management network is only accessible by each node's management controller (IMMv2 or FSP), each switch module's management interfaces, the CMM, and the Flex System Manager (FSM) management appliance. This design permits the separation of the management network from the data network.
The CMM has a high-security policy that is enabled by default, which means that the following policies are enabled by default:
- Strong password policies with automatic validation and verification checks
- Required update of the default passwords after the initial setup
- Only secure communication protocols, such as SSH and SSL. Unencrypted protocols, such as HTTP, Telnet, and SNMPv1, are disabled.
- Certificates to establish secure, trusted connections for applications that run on the management processors
Lenovo XClarity Administrator
Lenovo XClarity Administrator is centralized resource management solution aimed at reducing complexity, speeding response and enhancing availability of both Lenovo server systems and solutions.
Lenovo XClarity Administrator provides agent-free hardware management for System x rack servers and Flex System compute nodes and components, including the Chassis Management Module and Flex System I/O modules. The following figure shows the Lenovo XClarity Administrator interface, where both Flex System components and rack servers are being managed and can be seen on the dashboard.
Figure 8. Lenovo XClarity Administrator dashboard
For information about Lenovo XClarity Administrator, see the Lenovo Press Product Guide:
A maximum of six hot-swap power supplies can be installed in the Enterprise Chassis. In models where only two power supplies are standard, additional power supplies are orderable per the following table. All installed power supplies must be the same.
Note: The following power supplies are withdrawn from marketing:
- 2100W Power Module, 47C7633
- HVDC 2500W Power Module, 00AM765
|Description||Part number||Feature code|
|Flex System Enterprise Chassis 2500W Power Module||43W9049||A0UC|
|Flex System Enterprise Chassis -48V DC 2500W Power Module||00FJ635||A5VC|
Each AC power supply part number ships with one 2.0m (6.5 ft) 16A/100-250V, C19 to IEC 320-C20 rack power cable, feature 6292. Other supported AC line cords including three-way split line cords, are listed in the following table.
Table 8. Supported AC line cords
|Description||Part number||Feature code|
|4.3m, 16A/208V, C19 to NEMA L6-20P (US) Line Cord||40K9772||6275|
|2.5m, 16A/100-240V, C19 to IEC 320-C20 Rack Power Cable||39Y7916||6252|
|2m, 16A/100-250V, C19 to IEC 320-C20 Rack Power Cable||None||6292|
|4.3m, US/CAN, NEMA L15-30P - (3P+Gnd) to 3X IEC 320 C19||00D7192||A2Y3|
|4.3m, EMEA/AP, IEC 309 32A (3P+N+Gnd) to 3X IEC 320 C19||00D7193||A2Y4|
|4.3m, A/NZ, (PDL/Clipsal) 32A (3P+N+Gnd) to 3X IEC 320 C19||00D7194||A2Y5|
The -48V DC power supply operates at -48V to -60 V dc (nominal) and has a Molex 1060 Power Connector. The power supply ships with one 2.0m DC power cord (FRU part number 69Y1652)
The following figure shows the power supply and highlights the light-emitting diodes (LEDs).
Figure 9. Power supply option
The AC power supplies are 80 PLUS Platinum-certified. The 2500W modules are 2500 Watts output rated at 200VAC to 208VAC (nominal), and 2750W at 220VAC to 240VAC (nominal). The power supply has an oversubscription rating of up to 3538 Watts output at 200VAC. The power supply operating range is 200-240 VAC. The power supplies also contain two dual independently powered 40mm cooling fan modules that are powered not from the power supply itself, but from the chassis midplane. The fan modules are variable speed and controlled by the chassis fan logic.
80 PLUS is a performance specification for power supplies used within servers and computers. To meet the 80 PLUS standard, the power supply must have an efficiency of 80% or greater, at 20%, 50%, and 100% of rated load with PF of .09 or greater. The standard has several grades, such as Bronze, Silver, Gold, and Platinum. More information on 80 PLUS is available at http://www.80PLUS.org
The chassis allows configurations of power supplies to give N+N or N+1 redundancy. A chassis can operate on only three power-supply units (PSUs) with no redundancy, but N+1 or N+N is advised. Three power supplies (or six with N+N redundancy) allow for a balanced three-phase configuration.
All power supply modules are combined into a single power domain within the chassis, which distributes power to each of the compute nodes, I/O modules, and ancillary components through the Enterprise Chassis midplane. The midplane is a highly reliable design with no active components. Each power supply is designed to provide fault isolation and is hot swappable.
In the case of the 2500W supplies, power monitoring of both the DC and AC signals allows the Chassis Management Module to accurately monitor the power supplies.
The following figure shows the compute node bay numbering (left) and power supply bay numbering (right).
Figure 10. Power supply bay numbering
The following table shows the number of compute nodes that are supported in the chassis based on the power supplies used (2100W or 2500W), the number of power supplies installed, and the power redundancy policy enabled (N+1 or N+N).
Note: 2100W power supplies are now withdrawn from marketing.
In this table, the colors of the cells have the following meaning:
- Green cell: Supported with no restrictions as to the number of compute nodes that can be installed
- Yellow cell: Supported but with restrictions on the number of compute nodes that can be installed.
Note: These tables assume the chassis is filled with idential compute nodes. For more complex configurations, use the Power Configurator:
2100W power supplies*
2500W power supplies
|Flex System x220|
|Flex System x222|
|Flex System x240|
|Flex System x240 M5|
|Flex System x440|
|Flex System x880 X6, x480 X6 and x280 X6|
|Flex System V7000 Storage Node|
|Flex System p24L|
|Flex System p260|
|Flex System p270|
|Flex System p460|
* The 2100W Power Module, part number 47C7633, is withdrawn from marketing
The Enterprise Chassis supports up to a total of ten hot-swap fan modules: two 40 mm (1.57 in) fan modules and eight 80 mm (3.14 in) fan modules.
The two 40 mm fan modules distribute airflow to the I/O modules and chassis management modules. Both of these fan modules ship with the chassis. The 80 mm fan modules distribute airflow to the compute nodes through the chassis from front to rear. Each 80 mm fan module actually contains two 80 mm fan modules, back to back at each end of the module, which are counter-rotating. The following figure shows the 80 mm fan module.
Figure 11. 80 mm fan module
Four 80 mm fan modules are installed standard in chassis model 8721-A1x and CTO orders. The maximum number of 80 mm fan modules that can be installed is eight. Ordering information is shown in the following table. When the modules are ordered as a part number, they are supplied as a pair. The feature codes is comprised of one fan.
Table 10. Fan module ordering information
|Description||Part number||Feature code|
|Flex System Enterprise Chassis 80mm Fan Module||43W9078
(2 fan modules)
(1 fan module)
The 80 mm fan modules are populated, depending on the nodes installed. To support the base configuration and up to four nodes, chassis model 8721-A1x ships with four 80 mm fan modules and two 40 mm fan modules preinstalled. There are two cooling zones for the nodes: a left zone and a right zone. Fan modules must be installed in pairs as shown in the following figure. If there are insufficient fan modules for the number of nodes installed, the compute nodes might be throttled to balance heat generation and cooling capacity.
Figure 12. Fan module locations and cooling zones
The 40 mm fan modules are always required. Additional 80 mm fan modules are required as listed in the following table.
Table 11. 80 mm fan module requirements
|Description||80 mm fan module requirements|
|Up to four half-wide compute nodes (node bays 1 - 4)||4 fan modules (fan bays 1, 2, and 6, 7)|
|Up to eight half-wide compute nodes (node bays 1 - 8)||6 fan modules (fan bays 1, 2, 3 and 6, 7, 8)|
|All 14 compute node bays (node bays 1 - 14)||8 fan modules (fan bays 1, 2, 3, 4 and 6, 7, 8, 9)|
- Height: 440 mm (17.3 inches)
- Width: 447 mm (17.6 in)
- Depth, measured from front bezel to rear of chassis: 800 mm (31.5 in)
- Depth, measured from node latch handle to the power supply handle: 840 mm (33.1 in)
- Minimum configuration: 96.62 kg (213 lb)
- Maximum configuration: 220.45 kg (486 lb)
Shipping dimensions (approximate):
- Height: 81 cm (32 in)
- Length: 102 cm (40 in)
- Width: 71 cm (24 in)
The Flex System Enterprise Chassis complies with ASHRAE Class A3 specifications.
The following environment is the supported operating environment.
- 0 - 914 m (0 - 3,000 ft): 5 - 40 °C (41 - 104 °F)
- 914 m - 3048 m (3,000 - 10,000 ft): The maximum ambient temperature drops 1 °C for every additional 178 m (584 ft) increase in altitude until the maximum temperature is 28 °C at 3,048 m (10,000 ft)
Relative humidity: 8% - 85%
Maximum altitude: 3,048 m (10,000 ft)
- 200 - 240 V ac (nominal), 50 or 60 Hz
- Minimum configuration: 0.51 kVA (two power supplies)
- Maximum configuration: 13 kVA (six power supplies)
Power consumption: 12,900 watts maximum
Thermal output, full configuration - 12,900 watts (43,900 Btu/hr)
Acoustical noise emissions for Flex Chassis:
- 7.5 bels operating
- 7.5 bels idling
The noise emission level stated is the declared (upper limit) sound power level, in bels, for a random sample of machines. All measurements are made in accordance with ISO 7779 and reported in conformance with ISO 9296.
The system has a three-year warranty with 24x7 standard call center support and 9x5 Next Business Day onsite coverage. Also available are Lenovo Services warranty maintenance upgrades and post-warranty maintenance agreements, with a well-defined scope of services, including service hours, response time, term of service, and service agreement terms and conditions.
Lenovo warranty service upgrade offerings are country-specific. Not all warranty service upgrades are available in every country. For more information about Lenovo warranty service upgrade offerings that are available in your country, go to the Data Center Advisor and Configurator (formerly known as LESC) website http://lesc.lenovo.com, then do the following:
- In the Customize a Model box in the middle of the page, select the Services option in the Customization Option dropdown menu
- Enter in the machine type & model of the system
- From the search results, you can click either Deployment Services or Support Services to view the offerings
The following table explains warranty service definitions in more detail.
|On-site service||A service technician will arrive at the client’s location for equipment service.|
|24x7x2 hour||A service technician is scheduled to arrive at the client’s location within two hours after remote problem determination is completed. Lenovo provides service around the clock, every day, including Lenovo holidays.|
|24x7x4 hour||A service technician is scheduled to arrive at the client’s location within four hours after remote problem determination is completed. Lenovo provides service around the clock, every day, including Lenovo holidays.|
|9x5x4 hour||A service technician is scheduled to arrive at the client’s location within four business hours after remote problem determination is completed. Lenovo provides service 8:00 am - 5:00 pm in the client's local time zone, Monday-Friday, excluding Lenovo holidays. For example, if a customer reports an incident at 3:00 pm on Friday, the technician will arrive by 10:00 am the following Monday.|
|9x5 next business day||A service technician is scheduled to arrive at the client’s location on the business day after remote problem determination is completed. Lenovo provides service 8:00 am - 5:00 pm in the client's local time zone, Monday - Friday, excluding Lenovo holidays. Calls received after 4:00 pm local time require an extra business day for service dispatch. Next business day service is not guaranteed.|
|Committed Repair||Problems receive priority handling so that repairs are completed within the committed time of 6, 8, or 24 hours. Lenovo provides service 24 hours/day, every day, including Lenovo holidays.|
The following Lenovo warranty service upgrades are available:
- Warranty and maintenance service upgrades:
- Three, four, or five years of 9x5 or 24x7 service coverage
- Onsite response from next business day to 2 or 4 hours
- Committed repair service
- Warranty extension of up to 5 years
- Post warranty extensions
- 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
- Committed repair service levels are measured within the following coverage hours:
- 24x7x6: Service performed 24 hours per day, 7 days per week, within 6 hours
- 24x7x8: Service performed 24 hours per day, 7 days per week, within 8 hours
- 24x7x24: Service performed 24 hours per day, 7 days per week, within 24 hours
- Hard Disk Drive Retention
Lenovo’s Hard Disk Drive Retention (HDDR) service is a multi-drive hard drive retention offering that ensures your data is always under your control, regardless of the number of hard drives that are installed in your Lenovo server. In the unlikely event of a hard drive failure, you retain possession of your hard drive while Lenovo replaces the failed drive part. Your data stays safely on your premises, in your hands. The Hard Drive Retention service can be purchased in convenient bundles with our 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.
- Remote Technical Support Services (RTS)
RTS provides comprehensive technical call center support for covered servers, storage, operating systems, and applications. Providing a single source for support of hardware and software issues, RTS can reduce problem resolution time, decreasing the cost to address technical problems and increasing uptime. Offerings are available for Windows, Linux, IBM Systems Director, VMware, Microsoft business applications, and Lenovo System x storage devices, and IBM OEM storage devices.
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
- Argentina IEC 60950-1
- Japan VCCI, Class A
- IEC 60950-1 (CB Certificate and CB Test Report)
- China CCC (GB4943); (GB9254, Class A); (GB17625.1)
- Taiwan BSMI CNS13438, Class A; CNS14336
- Australia/New Zealand AS/NZS CISPR 22, Class A
- Korea KN22, Class A, KN24
- Russia/GOST ME01, IEC 60950-1, GOST R 51318.22, GOST R 51318.249, GOST R 51317.3.2, GOST R 51317.3.3
- CE Mark (EN55022 Class A, EN60950-1, EN55024, EN61000-3-2, EN61000-3-3)
- CISPR 22, Class A
- TUV-GS (EN60950-1/IEC 60950-1, EK1-ITB2000)
Top-of-rack Ethernet switches
For enterprise-class installations with multiple Flex System Enterprise Chassis configurations, a top-of-rack Ethernet switch from Lenovo provides the necessary level of networking between racks of systems and the rest of your production network.
The following table lists the Ethernet LAN switches that are offered by Lenovo.
|1 Gb Ethernet switches|
|7165H1X||Juniper EX2300-C PoE Switch|
|7165H2X||Juniper EX2300-24p PoE Switch|
|7Y810011WW||Lenovo ThinkSystem NE0152T RackSwitch (Rear to Front)|
|7Z320O11WW||Lenovo ThinkSystem NE0152TO RackSwitch (Rear to Front, ONIE)|
|7159BAX||Lenovo RackSwitch G7028 (Rear to Front)|
|7159CAX||Lenovo RackSwitch G7052 (Rear to Front)|
|7159G52||Lenovo RackSwitch G8052 (Rear to Front)|
|10 Gb Ethernet switches|
|7159A1X||Lenovo ThinkSystem NE1032 RackSwitch (Rear to Front)|
|7159B1X||Lenovo ThinkSystem NE1032T RackSwitch (Rear to Front)|
|7159C1X||Lenovo ThinkSystem NE1072T RackSwitch (Rear to Front)|
|7159BR6||Lenovo RackSwitch G8124E (Rear to Front)|
|7159CRW||Lenovo RackSwitch G8272 (Rear to Front)|
|7159GR6||Lenovo RackSwitch G8296 (Rear to Front)|
|25 Gb Ethernet switches|
|7159E1X||Lenovo ThinkSystem NE2572 RackSwitch (Rear to Front)|
|7Z210O21WW||Lenovo ThinkSystem NE2572O RackSwitch (Rear to Front, ONIE)|
|100 Gb Ethernet switches|
|7159D1X||Lenovo ThinkSystem NE10032 RackSwitch (Rear to Front)|
|7Z210O11WW||Lenovo ThinkSystem NE10032O RackSwitch (Rear to Front, ONIE)|
For more information, see the list of Product Guides in the following switch categories:
- 1 Gb Ethernet switches: http://lenovopress.com/networking/tor/1gb?rt=product-guide
- 10 Gb Ethernet switches: http://lenovopress.com/networking/tor/10gb?rt=product-guide
- 25 Gb Ethernet switches: http://lenovopress.com/networking/tor/25gb?rt=product-guide
- 40 Gb Ethernet switches: http://lenovopress.com/networking/tor/40gb?rt=product-guide
- 100 Gb Ethernet switches: https://lenovopress.com/networking/tor/100Gb?rt=product-guide
Fibre Channel SAN switches
The following table lists the Fibre Channel SAN switches that are offered by Lenovo and can be used with this system.
|8 Gb FC|
|3873AR3||Lenovo B300, 8 ports licensed, 8x 8Gb SWL SFPs, 1 PS, Rail Kit, 3Yr FW|
|3873AR6||Lenovo B300, E_Port License, 8 ports licensed, 8x 8Gb SWL SFPs, 1 PS, Rail Kit, 1Yr FW|
|16 Gb FC|
|6559F2A||Lenovo ThinkSystem DB610S, 8 ports licensed, 8x 16Gb SWL SFPs, 1 PS, Rail Kit, 1Yr FW|
|6559F1A||Lenovo ThinkSystem DB610S, ENT Bundle, 24 ports licensed, 24x 16Gb SWL SFPs, 1 PS, Rail Kit, 1Yr FW|
|6559D1Y||Lenovo ThinkSystem DB610S, ENT Bundle, 24 ports licensed, 24x 16Gb SWL SFPs, 1 PS, Rail Kit, 3Yr FW|
|3873ER1||Lenovo B6505, 12 ports licensed, 12x 16Gb SWL SFPs, 1 PS, Rail Kit, 1Yr FW|
|3873AR5||Lenovo B6505, 12 ports licensed, 12x 16Gb SWL SFPs, 1 PS, Rail Kit, 3Yr FW|
|3873IR1||Lenovo B6510, 24 ports licensed, 24x 16Gb SWL SFPs, 2 PS, Rail Kit, 1Yr FW|
|3873BR3||Lenovo B6510, 24 ports licensed, 24x 16Gb SWL SFPs, 2 PS, Rail Kit, 3Yr FW|
|32 Gb FC|
|6559F3A||Lenovo ThinkSystem DB610S, 8 ports licensed, No SFPs, 1 PS, Rail Kit, 1Yr FW|
|6559D3Y||Lenovo ThinkSystem DB610S, 8 ports licensed, No SFPs, 1 PS, Rail Kit, 3Yr FW|
|6415G3A||Lenovo ThinkSystem DB620S, 24 ports licensed, No SFPs, 2 PS, Rail Kit, 1Yr FW|
|6415H11||Lenovo ThinkSystem DB620S, 24 ports licensed, 24x 32Gb SWL SFPs, 2 PS, Rail Kit, 1Yr FW|
|6415G11||Lenovo ThinkSystem DB620S, 24 ports licensed, 24x 32Gb SWL SFPs, 2 PS, Rail Kit, 3Yr FW|
|6415H2A||Lenovo ThinkSystem DB620S, ENT Bundle, 48 ports licensed, 48x 32Gb SWL SFPs, 2 PS, Rail Kit, 1Yr FW|
|6684D2A||Lenovo ThinkSystem DB400D 32Gb FC Director, ENT. Feature set, 4 Blade slots, 8U, 1Yr FW|
|6684B2A||Lenovo ThinkSystem DB400D 32Gb FC Director, ENT. Feature set, 4 Blade slots, 8U, 3Yr FW|
|6682D1A||Lenovo ThinkSystem DB800D 32Gb FC Director, ENT. Feature set, 8 Blade slots, 14U, 1Yr FW|
For more information, see the list of Product Guides in the Rack SAN Switches category:
Power distribution units
Power planning for an Flex System Enterprise Chassis is essential.
The Enterprise Chassis has a maximum of six power supplies installed. So, careful consideration must be given to providing the best power-optimized source. Both N+N and N+1 configurations are supported for maximum flexibility in power redundancy. Each AC power supply in the chassis has a 16A C20 three-pin socket and can be fed by a C19 power cable, from a suitable supply.
The chassis has the ability to accommodate a maximum of six power supplies, so it is possible to balance a three-phase power input into a single chassis or a group of chassis. The chassis power system is designed for efficiency using data center power consisting of three-phase, 60A Delta 200 VAC (North America) or three-phase 32A wye 380-415 VAC (international). The chassis can also be fed from single-phase 200 - 240VAC supplies, if required.
For further details, see the Flex System Enterprise Chassis Power Requirements Guide, available from:
Table 15. Power distribution units
|Switched and monitored AC PDUs|
|46M4002||1U 9 C19/3 C13 Active Energy Manager DPI PDU|
|46M4003||1U 9 C19/3 C13 Active Energy Manager 60A 3 Phase PDU|
|46M4167||1U 9 C19/3 C13 Switched and Monitored 30A 3 Phase PDU|
|46M4134||0U 12 C19/12 C13 Switched and Monitored 50A 3 Phase PDU|
|46M4140||0U 12 C19/12 C13 50A 3 Phase PDU|
|Enterprise AC PDUs|
|71762MX||Ultra Density Enterprise PDU C19 PDU+ (WW)|
|71762NX||Ultra Density Enterprise PDU C19 PDU (WW)|
|71763MU||Ultra Density Enterprise PDU C19 3 phase 60A PDU+ (NA)|
|71763NU||Ultra Density Enterprise PDU C19 3 phase 60A PDU (NA)|
|39Y8923||DPI 60A Three Phase C19 Enterprise PDU with IEC309 3P+G (208 V) fixed line cord|
|39Y8948||DPI Single Phase C19 Enterprise PDU without line cord|
|Front-end AC PDUs|
|39Y8934||DPI 32amp/250V Front-end PDU with IEC 309 2P+Gnd connector|
|39Y8938||30amp/125V Front-end PDU with NEMA L5-30P connector|
|39Y8939||30amp/250V Front-end PDU with NEMA L6-30P connector|
|39Y8940||60amp/250V Front-end PDU with IEC 309 60A 2P+N+Gnd connector|
|44T0966||1U Higher Voltage DC PDU (240V/380V)|
Uninterruptible power supply units
The Flex System Enterprise Chassis supports attachments to the uninterruptible power supply units listed in the following table.
Table 16. Uninterruptible power supply units
|55946KX||RT6kVA 3U Rack or Tower UPS (200-240VAC)|
|55948KX||RT8kVA 6U Rack or Tower UPS (200-240VAC)|
|55949KX||RT11kVA 6U Rack or Tower UPS (200-240VAC)|
|55948PX||RT8kVA 6U 3:1 Phase Rack or Tower UPS (380-415VAC)|
|55949PX||RT11kVA 6U 3:1 Phase Rack or Tower UPS (380-415VAC)|
For more information, see the related Lenovo Press Product Guides in the UPS category:
The Flex System Enterprise Chassis is supported in the rack cabinets as listed in the following table. The suggested rack for Flex System is the 42U 1100 mm Enterprise V2 Deep Dynamic Rack, 93634PX.
Table 17. Rack cabinets
|93634PX||A1RC||42U 1100 mm Enterprise V2 Deep Dynamic Rack||Recommended|
|93634EX||A1RD||42U 1100 mm Dynamic Enterprise V2 Expansion Rack||Recommended|
|93634CX||A3GR||PureFlex System 42U Rack||Recommended|
|93634DX||A3GS||PureFlex System 42U Expansion Rack||Recommended|
|93634AX||A31F||PureFlex System 42U Rack||Recommended|
|93634BX||A31G||PureFlex System 42U Expansion Rack||Recommended|
|201886X||2731||11U Office Enablement Kit||Yes*|
|93072PX||6690||S2 25U Static Standard Rack||Yes|
|93072RX||1042||S2 25U Dynamic Standard Rack||Yes|
|93074RX||1043||S2 42U Standard Rack||Yes|
|99564RX||5629||S2 42U Dynamic Standard Rack||Yes|
|99564XX||5631||S2 42U Dynamic Standard Expansion Rack||Yes|
|93084PX||5621||42U Enterprise Rack||Yes|
|93084EX||5622||42U Enterprise Expansion Rack||Yes|
|93604PX||7649||42U 1200 mm Deep Dynamic Rack||Yes|
|93604EX||7650||42U 1200 mm Deep Dynamic Expansion Rack||Yes|
|93614PX||7651||42U 1200 mm Deep Static Rack||Yes|
|93614EX||7652||42U 1200 mm Deep Static Expansion Rack||Yes|
|93624PX||7653||47U 1200 mm Deep Static Rack||Yes|
|93624EX||7654||47U 1200 mm Deep Static Expansion Rack||Yes|
|14102RX||1047||eServer™ Cluster 25U Rack||Yes|
|14104RX||1048||Linux Cluster 42U Rack||Yes|
|9306-42P||None||Netfinity Enterprise Rack||No|
|9306-42X||None||Netfinity Enterprise Rack Expansion Cabinet||No|
|9306-200||None||Netfinity NetBAY 22||No|
* This Office Enablement kit is specifically designed for the BladeCenter S Chassis. The Flex System Enterprise Chassis can be installed in this kit with 1U of space remaining, however the noise generated by the chassis may not be acceptable for office use.
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 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:
Related product families
Product families related to this document are the following:
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