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KZPSA PCI-to-SCSI Storage Adapter

B–4 EK–KZPSA–UG. B01

NOTE

Refer to your StorageWorks Array Controllers

documents for specific information on how to con-

figure an HSZ40/Digital BA350-MA storage shelf

and the installation and replacement of its compo-

nents.

B.3.1 Single-Ended SCSI Bus Configuration

The BA350 storage shelves are setup in a split-bus configuration by installing the

BA350 internal jumper board behind slot 1 and the terminator board behind slot

5. Each bus shares the same terminator. The HSZ40 contains six single-ended 8-

bit SCSI ports. The BA350-MA controller shelf is physically configured for a

6x3 bus arrangement. An array of 18 3½-inch half-height devices are attached

across six single-ended SCSI buses. SCSI bus #1 through SCSI bus #6 are ac-

cessed through their respective SCSI connectors, mounted at the bottom of the

controller shelf. Cables for these connectors exit through the front of the control-

ler shelf and interconnect directly to the BA350 storage shelves containing the

SCSI devices.

B.3.2 SCSI ID Selection

The KZPSA adapter is assigned SCSI ID 7. The RAID controller is assigned

SCSI ID 6. For the SCSI devices, the device address is selected by its physical

location within the storage shelf, with the slot number equating to the SCSI ID

number.

B.3.3 SCSI Bus Termination

The differential bus is terminated at one end by the KZPSA storage adapter

(internally) and at the other end by attaching a differential terminator to the un-

used 68-pin p-connector on the tri-link connector located on the disk array con-

troller. The six single-ended buses are terminated at one end by active termina-

tors internal to the disk array controller and at the other end by the BA350’s

terminator board located behind slot 5 within the shelves.

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Seagate ST12550WD Betriebsanweisung Seite 56