HP 4000.6000.8000 Enterprise Virtual Arrays - Manual (Page 56)

Figure 29 Rack AC power distribution
2. PDM 2 1. PDM 1
4. PDU 1 3. PDM 3
6. PDM 5 5. PDM 4
8. PDU 2 7. PDM 6
Rack System/E power distribution components
AC power is distributed to the Rack System/E rack through Power Distribution Units (PDU) mounted
on the two vertical rails in the rear of the rack. Up to four PDUs can be mounted in the rack—two
mounted on the right side of the cabinet and two mounted on the left side.
Each of the PDU power cables has an AC power source specific connector. The circuit
breaker-controlled PDU outputs are routed to a group of ten AC receptacles. The storage system
components plug directly into the PDUs.
Rack AC power distribution
The power distribution configuration in a Rack System/E rack depends on the number of storage
systems installed in the rack. If one storage system is installed, only two PDUs are required. If
multiple storage systems are installed, four PDUs are required.
The site AC input voltage is routed to each PDU mounted in the rack. Each PDU distributes AC
through ten receptacles directly to the storage system components.
•
PDUs 1 and 3 (optional) are mounted on the left side of the cabinet. Power cords connect
these PDUs to the number 1 drive enclosure power supplies and to the controller enclosures.
•
PDUs 2 and 4 (optional) are mounted on the right side of the cabinet. Power cords connect
these PDUs to the number 2 drive enclosure power supplies and to the controller enclosures.
Moving and stabilizing a rack
WARNING! The physical size and weight of the rack requires a minimum of two people to move.
If one person tries to move the rack, injury may occur.
To ensure stability of the rack, always push on the lower half of the rack. Be especially careful
when moving the rack over any bump (e.g., door sills, ramp edges, carpet edges, or elevator
openings). When the rack is moved over a bump, there is a potential for it to tip over.
56 Enterprise Virtual Array hardware components