User`s guide

SCSI Bus Signal Converters
6.2 Installing SCSI Bus Signal Converters
Note
Maximum SCSI bus length is not the same as maximum cable length.
The longest StorageWorks BN21K or BN21L SCSI–P cable is 23 meters.
Do not use a longer SCSI–P cable.
6.3 SCSI Cables
The StorageWorks Family Configuration Guide describes SCSI cables in detail.
The particular cable used with a SCSI bus signal converter depends upon the
following:
• The bus type
– A DWZZA–AA has both a 68-pin, high-density, differential connector and
a 50-pin, low-density, single-ended connector.
– A DWZZA–VA has only one cable connector, a 68-pin, high-density,
differential connector for connecting to a host or controller. The DWZZA–
VA single-ended SCSI bus is routed to the SBB shelf through the 96-pin
connector on the rear of the DWZZA–VA
• The maximum allowable bus length
• The cable connector clearance. In some cases you must use a right-angle
connector because there is not enough clearance to use a straight connector.
DWZZA compatible cable types are listed in Table 6–2.
Table 6–2 SCSI Cable Types
Bus Connector Cable Type Connectors
DWZZA–VA SBB SCSI Bus Signal Converter Compatible Cables
Single-ended N/A The single-ended connector is a 96-pin connector that mates with the SBB
shelf connector.
Differential BN21K–23 One 68-pin, high-density, straight, connector and one 68-pin, high-density,
right-angle connector
Differential BN21L–23 Two 68-pin, high-density, right-angle connectors
DWZZA–AA Desktop SCSI Bus Signal Converter Compatible Cables
Single-ended
(Low-density host)
BC06P Two 50-pin, low-density, straight connectors with bale locks.
Single-ended
(High-density host)
BC09D 50-pin, high-density, straight connector and 50-pin, low-density, straight
connector
Differential BN21K–23 One 68-pin, high-density, straight connector and one 68-pin, high-density,
right-angle connector
Differential BN21L–23 Two 68-pin, high-density, right-angle connectors
SCSI Bus Signal Converters 6–5