Technical data

RZ56 Storage Expansion Box 55

6.1 General SCSI Bus Conﬁguration Information

The following is general information on the SCSI bus:

• The external SCSI port on the back of the system box can be

connected with one to six drives. However, system performance is

slower when more than four drives are connected.

• The BA42 enclosure storage expansion box can contain one or two

drives. Make sure you conﬁgure the second drive’s SCSI ID if the box

contains a second drive.

• The maximum distance for the cable between the external SCSI port

and the last storage expansion box is 18 feet (6 meters).

• The SCSI ID address determines the priority of devices on the SCSI

bus. SCSI ID 7 is the highest priority and SCSI ID 0 is the lowest

priority.

6.2 Connecting the RZ56 in a BA42 Storage

Expansion Box

The BA42 storage expansion box connects to the system box through

the external SCSI port. (Figure 6–2) and (Figure 6–3) show how the

BA42 storage expansion box connects to the system box. The SCSI cable

connects to either of the two ports on the back of the expansion box.

However, the SCSI terminator must be installed on the unused connector

unless another expansion box is daisy-chained. If the SCSI port already

has a box connected to it, use another cable to connect the new storage

expansion box to the last box on the daisy chain. Be sure to move the

terminator on the unused connector on the back of this last storage

expansion box in the daisy chain.