Installing The Disk Array Enclosures Into A Rack; Rack Mounting Requirements - HP StorageWorks 9000 - Virtual Library System User Manual

Installing the Disk Array Enclosures into a Rack

This section describes how to install the disk array enclosures into a rack.

Rack Mounting Requirements

Each disk array enclosure requires a vertical rack space of 2U (equivalent to 89 mm, or 3.5 inches).
Install three expansion disk array enclosures for the first array (array 0) in the rack positions 3 and
4. Starting at the bottom distributes the weight correctly in the cabinet. See
1 and 2 are reserved for PDUs. See
slots just above the expansion disk array enclosures. Repeat for the next array. Install up to four arrays
in a rack. Install the fifth through eighth arrays (if available) at the bottom of a second rack. Install
the ninth through twelfth arrays (if available) in a third rack. Install the thirteenth through sixteenth
arrays (if available) in a fourth rack.
If you have the base VLS9000 7.5 TB or 10 TB system and you anticipate adding more disk array
enclosures in the future, consider leaving up to three 2U spaces open at the bottom of the rack. This
eliminates having to reinstall existing components as you expand.
50 Hardware Installation
Installing PDUs. Next, install a base disk array enclosure in the
Figure 14. Rack positions