Compaq DS-DWZZH-05 manual DS-DWZZH Overview

this technical update provides the DS-DWZZH-05 configuration information that would appear in Chapter 4 of the TruCluster Software Products Hardware Configuration manual.

1.2 DS-DWZZH Overview

The DS-DWZZH series UltraSCSI hubs are SCSI-2 and draft SCSI-3 compliant SCSI 16-bit signal converters capable of data transfer rates of up to 40 MB per second. Cluster member systems and HSZ50 or HSZ70 RAID array controllers are radially connected to the hub ports.

A DS-DWZZH UltraSCSI hub:

·Improves the reliability of the detection of cable faults.

·Provides for bus isolation of cluster systems while allowing the remaining connections to continue to operate.

·Allows for more separation of systems and storage in a cluster configuration because each SCSI bus segment can be up to 25 meters in length. This allows a total separation of nearly 50 meters between a system and the storage.

For more information on the DS-DWZZH-05 UltraSCSI hub, see the following documents:

·DWZZH 16-Bit UltraSCSI Hub User's Guide (EK-DWZZH-UG)

·Shared Storage for DIGITAL UNIX Using UltraSCSI Hubs (EK-SMA20-AN)

·StorageWorks Solutions BA356-SB 16-Bit Shelf User's Guide (EK-BA356-UG)

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