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StorageWorks SCSI Buses

This chapter describes the StorageWorks building block (SBB) shelf SCSI buses,

including bus lengths, terminators, jumpers, and component locations.

WARNING

Service procedures described in this manual, involving blower removal or

access to the rear of the shelf must be performed only by qualiﬁed service

personnel.

To reduce the risk of electrical energy hazard, disconnect the power cables

from the shelf power supplies before removing shelf blower assemblies

or performing service in the backplane area, such as modifying the SCSI

bus.

As shown in Figure 5–1, the SBB shelf has the following:

• Two 50-pin, high-density, female, single-ended, SCSI–2 connectors: JA1 and

JB1 (lower)

• Either one or two SCSI buses as determined by the terminator board and the

jumper board location

Figure 5–1 Typical SBB Shelf

CXO-3617B-PH

(7)

POWER

65432 01

SCSI

CONNECTORS

StorageWorks SCSI Buses 5–1

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 73 74

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Digital Equipment Corporation Storage Works Guide de l'utilisateur Page 43