Flex System Enterprise Chassis

Flex System Enterprise Chassis
Flex System Enterprise Chassis
Lenovo Press Product Guide
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?
Flex System is one of the key underlying technologies at the heart of Lenovo converged systems
offerings, PureFlex and VSPEX. PureFlex System combines advanced Flex System hardware integrated
into a solution that is simple to acquire and deploy. PureFlex is also available in a version optimized for
Virtual Desktop Infrastructure. The VSPEX private cloud with Lenovo Flex System offers an easy on-ramp
to cloud computing, with a rigorous validated EMC VSPEX built on Lenovo infrastructure, to ensure fast
low risk deployments.
Flex System Enterprise Chassis
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Key features
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, -48V DC and HVDC. 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, storage, or networking capability is as simple as adding
additional nodes or modules. 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.
Flex System Enterprise Chassis
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Locations of key components and connectors
Figure 2 shows the front of the Enterprise Chassis.
Figure 2. Front of the Flex System Enterprise Chassis
Figure 3 shows the rear of the Enterprise Chassis.
Figure 3. Rear of the Flex System Enterprise Chassis
Flex System Enterprise Chassis
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Standard specifications
The following table lists the standard specifications.
Table 1. Standard specifications (Part 1)
Components
Specification
Machine type
8721
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 16 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, 2100W AC, 2500W HVDC 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
Flex System Enterprise Chassis
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Table 1. Standard specifications (Part 2)
Components
Specification
Electrical power AC Input power: 200 - 240 V ac (nominal), 50 or 60 Hz
HVDC DC Input power: 240 - 380 V dc (nominal)
-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
Models
The following table lists the specifications of the standard Enterprise Chassis models.
Table 2. Models
Model
Firmware
codebase
Node
bays
CMM*
(2 max)
I/O bays
(used / max)
I/O modules
included
Power
supplies
(6 max)
40mm
fans
(2 max)
80mm
fan**
(8 max)
Console
breakout
cable
Standard models
8721-A1x
IBM
14
1x CMM1
0/4
None
2x 2500W
2
4
1
8721-LRx
IBM
14
1x CMM1
0/4
None
2x 2100W
2
4
1
8721-DCx
IBM
14
1x CMM1
0/4
None
2x 2500W
-48V DC
2
4
1
8721-ALx
Lenovo
14
1x CMM2
0/4
None
2x 2500W
2
4
1
8721-DLx
Lenovo
14
1x CMM2
0/4
None
2x 2500W
-48V DC
2
4
1
14
1x CMM1
0/4
None
2x 2500W
2
4
1
Express models – Europe
8721-K1G
IBM
TopSeller models – North America
8721-E1Y
IBM
14
2x CMM1
2/4
2x SI4093†
6x 2500W
2
8
1
8721-E2Y
IBM
14
2x CMM1
2/4
2x CN4093†
6x 2500W
2
8
1
8721-E3Y
Lenovo
14
2x CMM2
2/4
2x SI4093#
6x 2500W
2
8
1
8721-E4Y
Lenovo
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)
** One 80mm fan module part number or feature code contains two fan modules (System x feature code A0UA or
part number 43W9078)
† I/O modules are those with IBM-signed firmware (Flex System Fabric CN4093 10Gb Converged Scalable Switch,
00D5823 and Flex System Fabric SI4093 System Interconnect Module, 95Y3313)
# I/O modules are those with Lenovo-signed firmware (Flex System Fabric CN4093 10Gb Converged Scalable
Switch, 00FM510 and Flex System Fabric SI4093 System Interconnect Module, 00FM518)
Flex System Enterprise Chassis
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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.
Table 3. Supported compute nodes and maximum quantities
Supported in chassis
Machine
type
Firmware
code base
8721 with CMM1
(IBM signed)
8721 with CMM2
(Lenovo signed)
Maximum
per chassis*
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
9532
Lenovo signed
Supported
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**
Description
Lenovo x86 servers
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)
Flex System Enterprise Chassis
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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 IBM® ServerProven® for the latest information about the supported servers:
http://ibm.com/servers/eserver/serverproven/compat/us/
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
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The following table lists the switches that are available for the chassis.
Table 4. I/O modules and upgrades
Supported in chassis
Part number
Firmware
code base
8721 with CMM
(IBM signed)
8721 with CMM2
(Lenovo signed)
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
EN2092 1Gb Ethernet Scalable Switch
49Y4294
IBM*
Supported
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
EN6131 40Gb Ethernet Switch
90Y9346
Vendor
Supported
Supported
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
90Y3450
Vendor
Supported
Supported
Description
Ethernet modules
Fibre Channel switches
InfiniBand switches
IB6131 InfiniBand Switch (QDR/FDR)
* For these switches, IBM signed switch firmware is up to Version 7.x and Lenovo signed switch firmware is Version
8.x onwards
Flex System Enterprise Chassis
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I/O architecture
Each half-wide compute node (such as the Flex System x240 Compute Node) has two adapter slots, and
each full-wide compute node (such as the Flex System x440 Compute Node) 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 although currently only two-port and four-port adapters
are available.
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
Flex System Enterprise Chassis
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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
Flex System Enterprise Chassis
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The following table shows the connections between adapter slots in the compute nodes to the switch bays
in the chassis.
Table 5. Adapter to I/O bay correspondence
I/O adapter slot
in the server
Slot 1
Slot 2
Slot 3
(full-wide compute nodes only)
Slot 4
(full-wide compute nodes only)
Port on the adapter
Corresponding I/O module bay
in the chassis
Port 1
Module bay 1
Port 2
Module bay 2
Port 3 (for 4-port cards)*
Module bay 1
Port 4 (for 4-port cards)*
Module bay 2
Port 1
Module bay 3
Port 2
Module bay 4
Port 3 (for 4-port cards)*
Module bay 3
Port 4 (for 4-port cards)*
Module bay 4
Port 1
Module bay 1
Port 2
Module bay 2
Port 3 (for 4-port cards)*
Module bay 1
Port 4 (for 4-port cards)*
Module bay 2
Port 1
Module bay 3
Port 2
Module bay 4
Port 3 (for 4-port cards)*
Module bay 3
Port 4 (for 4-port cards)*
Module bay 4
* To make use of all four ports of a four-port adapter, the switch must have 28 internal ports enabled, and two
switches must be installed in the bays as indicated.
Flex System Enterprise Chassis
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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
Part
number
Feature codes*
Description
Standard /
Maximum
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.
Flex System Enterprise Chassis
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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
Flex System Enterprise Chassis
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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
Flex System Enterprise Chassis
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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:
http://lenovopress.com/tips1200
Flex System Enterprise Chassis
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Flex System Manager
Flex System Manager (FSM) is a systems management solution that offers flexible integrated systems
management across compute, storage, and networking resources in the Flex System infrastructure. It is
designed to help you get the most out of your IT installation while automating repetitive tasks. It can
significantly reduce the number of manual navigational steps for typical management tasks.
From simplified system setup procedures with wizards and built-in expertise to consolidated monitoring
for all of your physical and virtual resources, FSM provides core management functionality along with
automation so that you can focus your efforts on business innovation.
The Flex System Manager compute node provides configuration and management support locally or
remotely, for up to 16 chassis, their devices, and the compute nodes. The following figure shows the Flex
System Manager.
Figure 9. Flex System Manager
For information about Flex System Manager, see the Lenovo Press Product Guide:
http://lenovopress.com/tips0862
Power supplies
A maximum of six power supplies can be installed in the Enterprise Chassis. Either 2500W or 2100W
power supplies are available. Two 2500W power supplies are standard in model 8721-A1x. Two 2100W
power supplies are standard in model LRx. Additional power supplies are orderable per the following
table. All installed power supplies must be the same.
Table 7. Ordering part number and feature code
Description
Part number
Feature code
Flex System Enterprise Chassis 2500W Power Module
43W9049
A0UC
Flex System Enterprise Chassis 2100W Power Module
47C7633
A3JH
Flex System Enterprise Chassis HVDC 2500W Power Module
00AM765
EPA9
Flex System Enterprise Chassis -48V DC 2500W Power Module
00FJ635
A5VC
Flex System Enterprise Chassis
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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 2500W HVDC power supply operates at either 240V DC or 380V DC (192V - 400V input range). The
power supply has a Rong-Feng RF-203P connector. The power supply includes a 2.5m DC power cord
(SBB part number 00Y9100).
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 10. 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.
The 2100W power supplies are 2100 Watts output power rated at 200-240VAC. Similar to the 2500W
unit, this power supply also supports oversubscription, the 2100W unit can run up to 2895W for short
duration. The 2100W supplies have two independently powered dual 40mm cooling fans, that pick up
power from the midplane included within the power supply assembly.
Flex System Enterprise Chassis
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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 2500 W HVDC power supply operates at 240 V DC or 380 V DC. The 2500 W -48 V DC power supply
operates over a typical telecommunications range of -60 V to -48 V DC.
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. Power monitoring with the 2100W power
supplies is currently not supported.
The following figure shows the compute node bay numbering (left) and power supply bay numbering
(right).
Figure 11. 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).
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:
http://ibm.com/systems/bladecenter/resources/powerconfig.html
Flex System Enterprise Chassis
18
Table 9. Specific number of compute nodes supported based on installed power supplies (Part 1)
CPU
TDP
2100W power supplies
N+1, N=5
6 total
2500W power supplies
N+1, N=4
5 total
N+1, N=3
4 total
N+N, N=3
6 total
N+1, N=5
6 total
N+1, N=4
5 total
N+1, N=3
4 total
N+N, N=3
6 total
Flex System x220
50 W
14
14
14
14
14
14
14
14
60 W
14
14
14
14
14
14
14
14
70 W
14
14
14
14
14
14
14
14
80 W
14
14
14
14
14
14
14
14
95 W
14
14
14
14
14
14
14
14
Flex System x222
50 W
14
14
13
14
14
14
14
14
60 W
14
14
12
12
14
14
14
14
70 W
14
14
11
12
14
14
14
14
80 W
14
14
10
11
14
14
13
14
95 W
14
13
9
10
14
14
12
13
Flex System x240
60 W
14
14
11
11
14
14
14
14
70 W
14
14
11
11
14
14
14
14
80 W
14
14
11
11
14
14
14
14
95 W
14
14
11
11
14
14
14
14
115 W 14
14
11
11
14
14
14
14
130 W 14
14
11
11
14
14
13
14
135 W 14
14
11
11
14
14
13
14
Flex System x240 M5
52 W
14
14
11
11
14
14
14
14
55 W
14
14
11
11
14
14
14
14
65 W
14
14
11
11
14
14
14
14
75 W
14
14
11
11
14
14
14
14
85 W
14
14
11
11
14
14
14
14
90 W
14
14
11
11
14
14
14
14
105 W 14
14
11
11
14
14
13
14
120 W 14
14
11
11
14
14
13
14
135 W 14
13
11
11
14
14
12
13
145 W 14
13
11
11
14
14
12
13
Flex System Enterprise Chassis
19
Table 9. Specific number of compute nodes supported based on installed power supplies (Part 2)
CPU
TDP
2100W power supplies
N+1, N=5
6 total
2500W power supplies
N+1, N=4
5 total
N+1, N=3
4 total
N+N, N=3
6 total
N+1, N=5
6 total
N+1, N=4
5 total
N+1, N=3
4 total
N+N, N=3
6 total
7
7
6
6
7
7
7
7
115 W 7
7
5
5
7
7
7
7
130 W 7
7
5
5
7
7
6
7
Flex System x440
95 W
Flex System x880 X6, x480 X6 and x280 X6
105 W 7
7
5
5
7
7
7
7
130 W 7
7
5
5
7
7
7
7
155 W 7
7
5
5
7
7
7
7
3
3
3
3
3
3
3
12
9
10
14
14
12
13
12
9
10
14
14
12
13
12
9
9
14
14
12
12
6
4
5
7
7
6
6
Flex System V7000 Storage Node
N/A
3
Flex System p24L
All
14
Flex System p260
All
14
Flex System p270
All
14
Flex System p460
All
7
Flex System Enterprise Chassis
20
Fan modules
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 12. 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)
A0UA
(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.
Flex System Enterprise Chassis
21
Figure 13. 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)
Physical specifications
Dimensions:




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)
Weight:


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)
Flex System Enterprise Chassis
22
Supported environment
The Flex System Enterprise Chassis complies with ASHRAE Class A3 specifications.
The following environment is the supported operating environment.
Temperature:


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)
Electrical power:



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.
Flex System Enterprise Chassis
23
Warranty options
The Flex System Enterprise Chassis has a three-year on-site warranty with 9x5 next-business-day terms.
Lenovo offers the service upgrades through 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; that is, each country might have its own
service types, service levels, response times, and terms and conditions. Not all covered types of warranty
service upgrades might be available in a particular country or area. For more information about Lenovo
warranty service upgrade offerings that are available in your country, visit the Lenovo Services website:
https://www-304.ibm.com/sales/gss/download/spst/servicepac/extProductSelectorWWW.do
The following table explains warranty service definitions in more detail.
Table 12. Warranty service definitions
Term
Description
On-site
repair
A service technician will come to the server's location for equipment repair.
24x7x2 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.
24x7x4 hour
A service technician is scheduled to arrive at the client’s location within eight 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 a.m. - 5:00 p.m. in the
client's local time zone, Monday - Friday, excluding Lenovo holidays.
9x5 next
business day
A service technician is scheduled to arrive at the client’s location on the business day after Lenovo
receives your call, following remote problem determination. Lenovo provides service 8:00 a.m. 5:00 p.m. in the client's local time zone, Monday - Friday, excluding Lenovo holidays. Calls
received after 4:00pm local time require an extra business day for service dispatch. Next business
day service is not guaranteed.
The following types of Lenovo warranty service upgrades are available:

Warranty and maintenance service upgrades:




Three, four, or five years of 9x5 or 24x7 service coverage
Onsite repair from next business day to 8 or 4 hours
One or two years of warranty extension
Priority technical support
Lenovo’s Priority Support Offering enhances our award-winning call center support to provide top
priority queue assignment to specialized Lenovo technicians. Priority support accelerates call center
troubleshooting to get your problems resolved quickly, and includes other value added support for
Lenovo provided software tools. Priority support can be purchased stand-alone to match the base
warranty of your system or in convenient bundles with our same-day response services.
Flex System Enterprise Chassis
24

Keep Your Drive Multi-Drive
Lenovo’s Keep Your Drive Multi-Drive 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. Keep Your Drive Multi-Drive can be purchased stand-alone to match the base warranty
of your system or in convenient bundles with our same-day response services.
Regulatory compliance
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

NOM-019

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)
Flex System Enterprise Chassis
25
External disk storage systems
The following System x options are available for attaching external storage systems to Enterprise
Chassis:
Table 13. External disk storage systems
Part number
Description
2071CU2
IBM Storwize V3500 LFF Dual Control Enclosure
2071CU3
IBM Storwize V3500 SFF Dual Control Enclosure
6099L2C
IBM Storwize V3700 3.5-inch Storage Controller Unit
6099S2C
IBM Storwize V3700 2.5-inch Storage Controller Unit
6099T2C
IBM Storwize V3700 2.5-inch DC Storage Controller Unit
6194L2C
IBM Storwize V5000 LFF Control Enclosure
6194LEU
IBM Storwize V5000 LFF Expansion Enclosure
6194S2C
IBM Storwize V5000 SFF Control Enclosure
6194SEU
IBM Storwize V5000 SFF Expansion Enclosure
6195SC5
IBM Storwize V7000 2.5-inch Storage Controller Unit
6195LEF
IBM Storwize V7000 3.5-inch Storage Expansion Unit
6195SEF
IBM Storwize V7000 2.5-inch Storage Expansion Unit
Flex System Enterprise Chassis
26
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 available top-of-rack
switches.
Table 14. Top-of-rack switches
Part number
Description
1 Gb top-of-rack switches
7159BAX
Lenovo RackSwitch G7028 (Rear to Front)
7159CAX
Lenovo RackSwitch G7052 (Rear to Front)
715952F
Lenovo RackSwitch G8052 (Front to Rear)
7159G52
Lenovo RackSwitch G8052 (Rear to Front)
10 Gb top-of-rack switches
7159BF7
Lenovo RackSwitch G8124E (Front to Rear)
7159BR6
Lenovo RackSwitch G8124E (Rear to Front)
715964F
Lenovo RackSwitch G8264 (Front to Rear)
7159G64
Lenovo RackSwitch G8264 (Rear to Front)
7159DFX
Lenovo RackSwitch G8264CS (Front to Rear)
7159DRX
Lenovo RackSwitch G8264CS (Rear to Front)
7159CFV
Lenovo RackSwitch G8272 (Front to Rear)
7159CRW
Lenovo RackSwitch G8272 (Rear to Front)
7159GR5
Lenovo RackSwitch G8296 (Front to Rear)
7159GR6
Lenovo RackSwitch G8296 (Rear to Front)
40 Gb top-of-rack switches
7159BFX
Lenovo RackSwitch G8332 (Front to Rear)
7159BRX
Lenovo RackSwitch G8332 (Rear to Front)
Flex System Enterprise Chassis
27
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:
http://ibm.com/systems/bladecenter/resources/powerconfig.html
Table 15. Power distribution units
Part number
Description
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
DC PDUs
44T0966
1U Higher Voltage DC PDU (240V/380V)
Flex System Enterprise Chassis
28
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
Part number
Description
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)
21303RX
Uninterruptible Power Supply 7500XHV
21304RX
Uninterruptible Power Supply 10000XHV
53956AX
6000VA LCD 4U Rack Uninterruptible Power Supply (200 V/208 V)
53956KX
6000VA LCD 4U Rack Uninterruptible Power Supply (230 V)
53959KX
11000VA LCD 5U Rack Uninterruptible Power Supply (230V)
For more information, see the related Lenovo Press Product Guides in the Power infrastructure category:
http://lenovopress.com/systemx/power
Flex System Enterprise Chassis
29
Rack cabinets
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
Part
number
Feature
code
Rack cabinet
Supported
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
9306-900
None
Netfinity® Rack
No
9306-910
None
Netfinity Rack
No
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.
Flex System Enterprise Chassis
30
Rack options
The server supports the rack console switches and monitor kits listed in the following table.
Table 18. Rack options
Part number
Feature code
Description
Monitor kits and keyboard trays
17238BX
1723HC1 fc A3EK
1U 18.5" Standard Console
17238EX
1723HC1 fc A3EL
1U 18.5" Enhanced Media Console
172317X
1723HC1 fc 0051
1U 17in Flat Panel Console Kit
172319X
1723HC1 fc 0052
1U 19in Flat Panel Console Kit
3858D3X
3858HC1 fc A4X1
Avocent Universal Management Gateway 6000
1754D2X
1754HC2 fc 6695
Global 4x2x32 Console Manager (GCM32)
1754D1X
1754HC1 fc 6694
Global 2x2x16 Console Manager (GCM16)
1754A2X
1754HC4 fc 0726
Local 2x16 Console Manager (LCM16)
1754A1X
1754HC3 fc 0725
Local 1x8 Console Manager (LCM8)
00AK142
A4X4
UM KVM Module VGA+SD Dual RJ45
43V6147
3757
Single Cable USB Conversion Option (UCO)
39M2895
3756
USB Conversion Option (4 Pack UCO)
39M2897
3754
Long KVM Conversion Option (4 Pack Long KCO)
46M5383
5341
Virtual Media Conversion Option Gen2 (VCO2)
46M5382
5340
Serial Conversion Option (SCO)
Console switches
Console cables
For more information, see the related Lenovo Press Product Guides in the Power infrastructure category:
http://lenovopress.com/systemx/rack
Flex System Enterprise Chassis
31
Related publications and links
For more information, see the following resources:

Flex System product page
http://ibm.com/systems/flex

US Product Announcement for the Flex System Enterprise Chassis
http://ibm.com/common/ssi/cgi-bin/ssialias?infotype=dd&subtype=ca&&htmlfid=897/ENUS112-053

Flex System Information Center
http://publib.boulder.ibm.com/infocenter/flexsys/information/index.jsp

Flex System Enterprise Chassis Installation and Service Guide
http://publib.boulder.ibm.com/infocenter/flexsys/information/topic/com.ibm.acc.8721.doc/printable_doc.html

ServerProven hardware compatibility page for Flex System
http://www.ibm.com/systems/info/x86servers/serverproven/compat/us/

Flex System Interoperability Guide
http://lenovopress.com/fsig

Flex System Enterprise Chassis Power Requirements Guide
http://ibm.com/systems/bladecenter/resources/powerconfig.html

Lenovo Flex System Products and Technology, SG24-8255
http://lenovopress.com/sg248255

Lenovo Press Product Guides for Flex System servers and options
http://lenovopress.com/flexsystem

System x and Cluster Solutions configurator (x-config)
http://ibm.com/products/hardware/configurator/americas/bhui/asit/

System x Configuration and Options Guide
http://ibm.com/systems/xbc/cog/

ServerProven for Flex System
http://ibm.com/systems/info/x86servers/serverproven/compat/us/flexsystems.html

IBM System Storage® Interoperation Center
http://www.ibm.com/systems/support/storage/ssic
Flex System Enterprise Chassis
32
Notices
Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your
local Lenovo representative for information on the products and services currently available in your area. Any
reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product,
program, or service may be used. Any functionally equivalent product, program, or service that does not infringe
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This document was created or updated on April 28, 2015.
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