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4: Rack Information
SGI ICE X Series D-Rack (42U)
The SGI tall D-Rack (shown in Figure 4-1 on page 57) has the following features and
components:
•
Front and rear door
. The front door is opened by grasping the outer end of the
rectangular-shaped door piece and pulling outward. It uses a key lock for security purposes
that should open all the front doors in a multi-rack system (see Figure 4-2 on page 58). A
front door is required on every rack.
Note:
The front door and rear door locks are keyed differently. The optional water-chilled
rear doors (see Figure 4-3 on page 59) do not use a lock.
Up to four optional 10.5 U-high (18.25-inch) water-cooled doors can be installed on the rear
of the SGI ICE X D-Rack.
Each air-cooled rack has a key lock to prevent unauthorized access to the system via the rear
door, see Figure 4-4 on page 60. In a system made up of multiple air-cooled racks, rear doors
have a master key that locks and unlocks all rear doors in a system. You cannot use the rear
door key to secure the front door lock.
•
Cable entry/exit area.
Cable access openings are located in the front floor and top of the
rack. Cables are only attached to the front of the IRUs; therefore, most cable management
occurs in the front and top of the rack. Stand-alone administrative, leader and login server
modules are the exception to this rule and have cables that attach at the rear of the rack. Rear
cable connections will also be required for optional storage modules installed in the same
rack with the enclosure(s). Optional inter-rack communication cables pass through the top of
the rack. I/O and power cables normally pass through the bottom of the rack.
•
Rack structural features.
The rack is mounted on four casters; the two rear casters swivel.
There are four leveling pads available at the base of the rack. The base of the rack also has
attachment points to support an optional ground strap, and/or seismic tie-downs.
•
Power distribution units in the rack.
Up to sixteen may be required for a single enclosure
pair system as follows:
–
up to 8 outlets for an enclosure pair (including GigE switch configuration)
–
two outlets for the rear fan (blower) enclosure power supplies
–
4 outlets for administration and RLC servers (in primary rack)
–
2 outlets for a service node (server)
–
Allow eight or more outlets for an additional enclosure pair in the system
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