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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 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.
The following section describes how to prepare the DS-DWZZH-05 UltraSCSI
hub for use on a shared SCSI bus in more detail.
3.6.1.2.1 DS-DWZZH-05 Configuration Guidelines
The DS-DWZZH-05 UltraSCSI hub can be installed in:
• A StorageWorks UltraSCSI BA356 shelf (which has the required
180-watt power supply).
• A non-UltraSCSI BA356 that has been upgraded to the 180-watt power
supply with the DS-BA35X-HH option.
_____________________ Note _____________________
Dual power supplies are recommended for any BA356 shelf
containing a DS-DWZZH-05 UltraSCSI hub in order to
provide a higher level of availability between cluster member
systems and storage.
3–10 Shared SCSI Bus Requirements and Configurations Using UltraSCSI Hardware