Datasheet
IBM Flex System Enterprise Chassis 4
Standard specifications
The following table lists the standard specifications.
Table 1. Standard specifications
Components Specification
Model System x® ordering sales channel: 8721-A1x
Power Systems™ sales channel: 7893-92X
Form factor 10U rack-mounted unit.
Maximum
number of
compute nodes
supported
14 half-wide (single bay), seven full-wide (two bays), or three double-height full-wide (four
bays). Mixing is supported.
Chassis per
42U rack
Four.
Nodes per 42U
rack
56 half-wide, or 28 full-wide.
Management One or two Chassis Management Modules (CMMs), for basic chassis management. Two CMMs
form a redundant pair; One CMM standard in 8721-A1x. The CMM interfaces with the integrated
management module (IMM) or Flexible Service Processor (FSP) integrated in each compute
node in the chassis. Optional IBM Flex System Manager management appliance for
comprehensive management, including virtualization, networking, and storage management.
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 Six 2500W power modules that provide N+N or N+1 redundant power; Two standard in model
8721-A1x. Power supplies are 80 PLUS Platinum-certified and provide 95% efficiency at 50%
load and 92% efficiency at 100% load. Power capacity of 2500W output rated at 200VAC. Each
power supply contains two independently powered 40 mm (1.57 in) cooling fan modules. 2100W
power supplies also available via CTO only and with restricted configurations.
Fan modules Ten fan modules (eight 80 mm (3.14 in) fan modules and two 40 mm (1.57 in) fan modules);
Four 80 mm and two 40 mm fan modules standard in model 8721-A1x.
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)
Declared sound
level
7.5 bels
Temperature Operating air temperature 5°C to 40°C
Electrical power Input 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