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Link Control Cards (LCCs)
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About the Rackmount Disk-Array Processor Enclosure
Figure 1-12 Drive Fan Pack
The drive fan pack has one status light. The status light is described
in the “Monitoring DPE Status” section of Chapter 3.
Latches on the drive fan pack hold the pack in place.
You can remove the drive fan pack while the DPE is powered up. While the
pack is removed, the cooling check light on each power supply flashes. If the
pack is removed for more than approximately two minutes, the disk modules
and SPs power down. The disk modules and SPs power up when you
reinstall the drive fan pack.
SP Fan Pack
The SP fan pack (see Figure 1-12) cools the SPs. It contains three fans
that draw ambient room air through the SP fan pack cover, through
the midplane, and across the SPs. The SP fan pack connects to the
DPE midplane via an internal cable, 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.
Check light
(amber)
Latches
Latches
!