Hp Array Controller HSG V8.7 Software Manuel d'utilisateur Page 28

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Introducing the UltraSCSI RAID Enclosure
1–6 UltraSCSI RAID Enclosure
Expansion enclosures
have
filler panels
installed in the controller
and cache module slots that improve air flow and reduce
electromagnetic interference (EMI)
radiation.
The blank panels in the controller B and cache module B locations
improve air flow and control EMI in enclosures with only one
controller.
The enclosure backplane eliminates the need for cables to connect the
six vertical buses to the four horizontal drive SBB shelves. All the
devices on a shelf use the same SCSI bus
identifier (ID)
. The PVA
address switch defines the SCSI bus ID of each shelf. See Figure 1–3
for bus and shelf identifiers when viewing the enclosure from the
front.
Figure 1–3 Typical Enclosure Bus and Device Addressing
The ac input boxes distribute ac power to the individual shelf power
supplies through ac power cables. The backplane distributes the dc
output voltages (+5 V dc and +12 V dc) from the power supplies to
the following components:
Figure C
ALLOUT
1. SCSI bus
CXO6266B
2
3
4561
Shelf 4
Shelf 3
Shelf 2
Shelf 1
1
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