VERITAS NetBackup 5330 Installation Manual page 31

One RU has three holes. The holes for one RU are typically marked with a line
below the bottom hole and another line above the top hole. A number at the center
hole identifies where the RU appears in the rack.
Figure 2-1 shows the markings as described.
Rack RU space markings
Figure 2-1
Use the node and the storage shelf Rack Templates to determine the mounting
locations.
Best practices for hardware installation are as follows:
When you install the rails, be sure to use complete RUs. Do not use holes from
■
different RUs.
The storage shelves are much heavier than the node and should be installed
■
as close to the bottom of the rack as possible.
The node should always be installed on top of the storage shelves.
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Do not leave any spaces between the compute node and a storage shelf, or
■
between two storage shelves.
When you add expansion shelves to an operational appliance system, turn off
■
the node(s), the primary shelf, and existing expansion shelves.
To determine rack locations for the hardware
1
Determine the total number of rack units (RUs) that you need as follows:
Pre-installation requirements
Determining rack locations
31