Introducing the Ultra SCSI RAID Enclosure
1–6 UltraSCSI RAID Enclosure
The enclosure backplane eliminates the need for cables to connect the six
vertical buses to the four horizontal SBB shelves. All the devices on a shelf
use the same SCSI bus ID. The PVA selectable enclosure UltraSCSI ID
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
CXO6266A
2
3
4
5
6
1
SCSI bus
Shelf 4
Shelf 3
Shelf 2
Shelf 1
The ac power controllers 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) over two buses to the:
•
EMU
•
PVA
•
UltraSCSI bus controllers and cache modules
•
Disk drives
Summary of Contents for StorageWorks UltraSCSI DS-BA370 Series
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