HP 9000 Virtual Library System User Manual
Page 21
1.
Determine the number of PDUs to install.
•
The number of PDUs you install is based on the number of arrays to install.
•
Install up to four arrays in one rack.
•
Install up to a maximum of four additional arrays in racks two through four.
Use the following table to determine how many PDUs to install:
PDMs
PDUs
Arrays
Europe
North America
Europe
North America
6
6
2
2
1
6
6
2
2
2
8
10
4
4
3
8
10
4
4
4
NOTE:
PDUs are installed in pairs.
PDMs (power distribution modules) are the power outlet strips that connect to the PDUs.
NOTE:
Steps 2 through 6 correspond to the PDUs and PDMs called out in
.
2.
Install the first two PDUs in the front rack positions 1 and 2.
If installing four PDUs, install the second pair in the rear rack positions 1 and 2.
NOTE:
To ensure high availability, HP recommends connecting half of the PDMs to one
power source, and the other half to a second power source.
3.
Install PDMs from the front PDU in rack position 1 to the lower left rack doorway.
4.
Install PDMs from the front PDU in rack position 2 to the lower right rack doorway.
5.
If you installed four PDUs:
Install PDMs from the rear PDU in rack position 1 to the upper left rack doorway.
Install PDMs from the rear PDU in rack position 2 to the upper right rack doorway.
6.
If needed, you may install a fifth PDM on the upper left and right rack doorway beside the
top PDM for sites in North America, but do not exceed five PDMs per side. Do not exceed
four PDMs per side for sites in Europe.
WARNING!
•
In North America – Do not plug more than three PDMs into a PDU.
•
In Europe – Do not plug more than two PDMs into a PDU.
Installing PDUs
21