1
Drive Fan Pack
1-15
About the Deskside Disk-Array Processor Enclosure
Drive Fan Pack
The drive fan pack (see figure below) cools the disk modules, power
supplies, and LCCs in the DPE. A separate pack, described next, cools
the SPs. The drive fan pack contains three fans that draw ambient
room air through the front door, across the drive modules, and
through the midplane and power supplies. The drive fan pack
connects directly to both power supplies, and either supply can
power it. The fans operate at a lower voltage and speed during
normal operation to minimize acoustic noise. If a fan fails, the voltage
and speed of the remaining fans increase to compensate, resulting in
higher acoustic noise.
Figure 1-11
Drive Fan Pack
The drive fan pack has one status light. The status light is visible from
outside the unit, and is described in the “Monitoring System Status”
section of Chapter 3.
Latches
Check light
(amber)
!
Latches