Datasheet

IBM Flex System Enterprise Chassis 17

The chassis supports up to six power supplies. The following table shows the required 2500W power

supplies, depending on the number of compute nodes installed and the desired level of redundancy.

Because the chassis has one power domain, it does not matter where the power supplies are installed.

However, it is advised that you install the power supplies starting from the bottom power supply bays.

Note: The use of high-performance or heavily-configured compute nodes can require additional power

and, therefore, more power supplies than those power supplies listed in the table.

Table 6. Power supply ordering information

Description No redundancy N+1 redundancy N+N redundancy

Up to four half-wide compute nodes (node bays 1 - 4) 1 power supply* 2 power supplies 2 power supplies

Up to eight half-wide compute nodes (node bays 1 -

2 power supplies 3 power supplies 4 power supplies

All 14 compute node bays (node bays 1 - 14) 3 power supplies 4 power supplies 6 power supplies

* Chassis model 8721-A1x ships with two power supplies, which is the minimum number of power

supplies that can be installed.

For low-power requirements, the 2100 W power supplies can be used (CTO configurations only), however

a chassis powered by 2100W power supplies cannot be designated to provide redundant power (N+N)

unless all the compute nodes are configured with 95W or lower Intel processors. For planning purposes

note that the Flex System Manager has a 95W Intel processor. The following table shows the nodes that

are supported in chassis when powered by either the 2100W or 2500W power supplies. Any mix of the

supported nodes is supported in a single chassis, however the power supplies may not be mixed.

Table 7. Compute node support by power supply

Nodes 2100W

power supplies

2500W

power supplies

Flex System Manager Yes Yes

x220 (with or without the PEN or SEN) Yes* Yes

x240 (with or without the PEN or SEN) Yes* Yes

x440 Yes* Yes

p24L No Yes

p260 No Yes

p460 No Yes

V7000 Storage Node (with or without expansion node) Yes Yes

* N+N redundancy is only possible if all installed compute nodes use Intel processors with a TDP of 95W or lower.