Technical data

______________________ Note _______________________
The DS-DWZZH-03/05 UltraSCSI hubs cannot be connected to a
StorageWorks BA35X storage shelf because the storage shelf does
not provide termination power to the hub.
2.8 SCSI Cables
If you are using shared SCSI buses, you must determine if you need
cables with connectors that are low-density 50-pins, high-density 50-pins,
high-density 68-pins (HD68), or VHDCI (UltraSCSI). If you are using
an UltraSCSI hub, you will need HD68-to-VHDCI and VHDCI-to-VHDCI
cables. In some cases, you also have the choice of straight or right-angle
connectors. In addition, each supported cable comes in various lengths. Use
the shortest possible cables to adhere to the limits on SCSI bus length.
Table 2–4 describes each supported cable and the context in which you would
use the cable. Some Compaq equivalent 6-3 part numbers are not provided.
Table 2–4: Supported SCSI Cables
Cable
Connector
Density Pins Configuration Use
BN21W-0B Three high 68-pin A Y cable that can be attached to a
KZPSA-BB or KZPBA-CB if there
is no room for a trilink connector.
It can be used with a terminator to
provide external termination.
BN21M One low, one
high
50-pin
LD to
68-pin
HD
Connects the single-ended end of
a DWZZA-AA or DWZZB-AA to
a TZ885 or TZ887.
a
BN21K,
BN21L, or
328215-00X
Two HD68 68-pin Connects BN21W Y cables or wide
devices. For example, connects
KZPBA-CBs, KZPSA-BBs, HSZ40s,
HSZ50s, the differential sides of
two SCSI signal converters, or a
DWZZB-AA to a BA356.
BN37A Two VHDCI VHDCI
to
VHDCI
Connects two VHDCI trilinks to
each other or an UltraSCSI hub to a
trilink on an HSZ70, HSZ80, or an
UltraSCSI hub to a RAID Array 3000.
BN38C or
BN38D
One HD68, one
VHDCI
HD68 to
VHDCI
Connects a KZPBA-CB or KZPSA-BB
to a port on an UltraSCSI hub.
2–14 Hardware Requirements and Restrictions