HP EML E-series Tape Libraries - Manual (Page 105)

Placement of redundant PDU components
The library primary PDU (#1) and two power strips (#1 and #3) are installed at the factory. The
redundant PDU (#2) is installed above the primary PDU, also in a 0U side mount position. The top
of PDU #1 is approximately 33 cm (13 inches) from the caster boss. The top of PDU #2 is placed
approximately 63 cm (25 inches) from the caster boss (see
(page 105) ).
Power strip #2 is placed equidistant between power strips #1 and #3.
Power strip #4 is placed in a position low in the rack so that it does not interfere with the power
cords coming from PDU #1 to power strips #1 and #3.
With properly placed power strips in a fully redundant 40U configuration, the top six power supply
cords go to power strips #1 and #2. One power cord at each redundant level goes to each power
strip.
Similarly, the bottom four power cords in a fully redundant configuration are divided between
power strips #3 and #4. By using 0.5-m (15-inch) power cords, the dressing should be minimal.
Figure 59 Redundant PDU and power strip placement
2. Redundant PDU (#2) 1. Power strip #2
4. Caster boss 3. Power strip #4
Installation of redundant PDU components
Refer to the instructions provided with your redundant PDU for installation steps. After installation,
dress all cords with cable ties. In addition, use cable ties to lock the power cords coming out of
the PDU that go to each power strip.
Placement of redundant PDU components 105