HP 4400 Enterprise Virtual Array Expansion Rack Reference Guide (5697-2285, January 2013)

3 Connecting the main rack to the expansion rack
You can complete the connection between the main and expansion racks while the controllers are
powered on (online) or off (offline). The offline method is preferred if downtime is available.
Routing cables in the expansion rack
NOTE: The cables used are Optical fiber channel cables supplied in the HP P6000 EVA 5m
Expansion Cable Kit AP712A kit (four in the kit).
• Route the cables along the side of each rack so they can be secured and kept out of the way.
• Route all the expansion cables as a single bundle out of the bottom of the expansion rack, or
out of the top access in the host rack, to the top access in the expansion rack.
• Route the cables underneath the suspended flooring, if present.
• Bring the cables into the top or bottom of the main rack and separate them into two bundles.
• Wrap the excess cables around the spools that are provided in the expansion accessory kit.
CAUTION: Do not allow fiber cables to bend with a radius smaller than 30 mm (1.2 in).
Overbending compromises the integrity of the glass fiber transmission. To avoid deforming
or possibly breaking copper cables, do not allow them to bend with a radius smaller than 60
mm (2.4 in).
Online expansion
Connecting a maximum EVA4400 2C8D configuration
Figure 20 (page 18) shows the cabling for an EVA4400 2C4D main or host rack with a 0C4D
expansion rack using the AP712a cable kit. This configuration requires labeling the AP712A 5m
cables in the host rack to complete the connectivity loops from the controller to the disks, then
returning to the controller.
Routing cables in the expansion rack 17