Technical data

– A StorageWorks UltraSCSI BA356 storage shelf (which has the
required 180-watt power supply).
– The lower righthand device slot of the BA370 shelf within the RA7000
or ESA 10000 RAID array subsystems. This position minimizes cable
lengths and interference with disks.
– A non-UltraSCSI BA356 that has been upgraded to the 180-watt
power supply with the DS-BA35X-HH option.
• Uses the storage shelf only to provide its power and mechanical support.
(It is not connected to the shelf internal SCSI bus.)
• Has three Very High Density Cable Interconnect (VHDCI) differential
SCSI bus connectors.
• Does not use a SCSI ID.
DS-DWZZH-03 and DS-DWZZH-05 UltraSCSI hubs may be housed in the
same storage shelf with disk drives. Table 3–3 provides the supported
configurations.
Figure 3–2 shows a front view of the DS-DWZZH-03 UltraSCSI hub.
Figure 3–2: DS-DWZZH-03 Front View
Differential symbol
ZK-1412U-AI
The differential symbol (and the lack of a single-ended symbol) indicates
that all three connectors are differential.
3.6.1.2 DS-DWZZH-05 Description
The DS-DWZZH-05:
• Is a 13.33-centimeter (5.25-inch) StorageWorks building block (SBB).
• Has five Very High Density Cable Interconnect (VHDCI) differential
SCSI bus connectors.
• Uses SCSI ID 7 whether or not fair arbitration mode is enabled.
Therefore, you cannot use SCSI ID 7 on the member systems’ SCSI bus
adapter.
3–10 Shared SCSI Bus Requirements and Configurations Using UltraSCSI Hardware