This chapter describes the physical characteristics of the tall (40 U) racks in the following sections:
At the time this document was published only the tall (40U) rack shown in Figure 4-1 was approved for use with the Silicon Graphics Prism Extreme system.
The rack (shown in Figure 4-1) has the following features and components:
Cable entry/exit area located in the rear floor of the rack. All cables are attached to the rear of the bricks. The rack is mounted on four casters; the two rear casters swivel. The base of the rack has leveling pads, a ground strap, and seismic tie-downs.
The rack also has cable entry/exit areas at the top, bottom, and sides of the rack. I/O and power cables pass through the bottom of the rack. NUMAlink cables pass through the top and sides of the rack. Cable management occurs in the rear of the rack.One, two, or three power bays, depending on your computing needs. Each power bay in a compute rack will typically have three to six power supplies. Each power bay in an I/O rack will typically have one to three power supplies.
One, two, or three power distribution units (PDUs) per rack, depending on the number of power bays. A PDU can be a single-phase power or three-phase power distribution unit.
Table 4-1 lists the technical specifications of the tall rack.
Table 4-1. Tall Rack Technical Specifications
Characteristic | Specification |
|---|---|
Height | 74.25 in. (1886 mm) |
Width | 30.88 in. (784 mm) |
Depth | 53 in. (1346 mm) |
Weight (empty) Weight (maximum) | 425 lb (192.78 kg) 1400 lb (635 kg) |