User`s guide

KZPSA PCI-to-SCSI Storage Adapter
B–2 EK–KZPSA–UG. B01
B.2 Bus Converter Configuration (8-Bit Single-Ended)
Figure B–1 shows a KZPSA adapter configured to indirectly communicate with
six single-ended 8-bit SCSI devices. The DWZZA (bus converter) resides within
the first (SCSI ID 0) slot of the BA350-SA storage shelf. The KZPSA directly
interconnects, by way of a point-to-point cable, to the DWZZA-VA.
NOTE
Refer to your StorageWorks enclosure documents
for specific information on how to configure a Digital
BA350 storage shelf and the installation and re-
placement of its components.
B.2.1 Single-Ended SCSI Bus Configuration
The BA350 storage shelf contains two single-ended SCSI buses which are inter-
nally configured as a single bus. Six 3½-inch half-height 8-bit SCSI devices are
attached to the bus.
B.2.2 SCSI ID Selection
The KZPSA adapter is assigned SCSI ID 7. For the SCSI devices, the device ad-
dress is selected by its physical location within the storage shelf, with the slot
number equating to the SCSI ID number.
B.2.3 SCSI Bus Termination
The differential bus is terminated at one end by the KZPSA storage adapter
(internally) and at the other end by the DWZZA bus converter (internally). The
single-ended bus is terminated at one end by the DWZZA bus converter
(internally) and at the other end by a terminator board located behind slot 1 on
the backplane of the BA350 storage shelf.