| Components | Specification |
| Model |
System x® ordering sales channel: 8721-A1x or 8271-LRx 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. |
| 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 power modules that provide N+N or N+1 redundant power; Two standard, six maximum. Models A1x and K1G have 2500W power supplies standard, LRx has 2100W power supplies. Power supplies are 80 PLUS Platinum-certified and provide 95% efficiency at 50% load and 92% efficiency at 100% load. Power capacity of 2500 W or 2100 W output rated at 200VAC. Each power supply contains two independently powered 40 mm cooling fan modules. |
| 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) |
| 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 |
