Silicon Graphics SGI Altix 3700 Bx2, User Manual

Page: 84 / 214

60 007-4377-002
4: Rack Information
Tall Rack (40U)
The tall rack (shown in Figure 4-1 on page 61) has the following features and
components:
• Front and rear door . Both front and rear doors lock to prevent unauthorized access
to the system. You lock the front door from the rear of the rack by depressing and
turning the actuator handle (see “Locking the Front Door” on page 62). Once the
front door is locked, you lock the rear door with a key.
• 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 tall 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.