Technical data

4.4.2 Selecting Available SCSI IDs on the System
You must identify which SCSI IDs are available before connecting an expansion
box. Use the configuration display to determine this information. To see the
configuration display, enter the following command:
>>> SHOW CONFIG
The system displays information similar to the following:
KA52-A Vn.n, VMB 2.14
08-00-2B-2B-16-91
80MB
TstNbr DevNam Info
------ -------- --------------------------
0 CPU_BD OK
A8 MEMORY OK
E4 DZ OK
E0 SCSI OK
3-RZ24L 6-Adapter 7-RRD42
5F NI OK
5C DSSI OK
0 QBUS OK
E8 COMM OK
DSW41/42 2 CHANNEL V3.11-47
EC ASYNC OK
DHW41/2 V1.6
The letters OK by the SCSI device indicate that it has passed the power-on
test.
This line shows the SCSI IDs that are occupied by devices on the SCSI bus.
For example, the RZ24 disk drive occupies SCSI ID 3 and the RRD42 drive
occupies SCSI ID 7.
SCSI ID 6 is the default ID for the SCSI bus adapter.
There are eight SCSI IDs, numbered from 0 to 7. Select any SCSI ID that is
not occupied by another device.
4.4.3 Preparing the System Unit for an Expansion Box
To prepare the system unit for an expansion box, follow these steps:
1. Shut down the operating system using the procedure outlined in the
operating system documentation.
2. Set the on/off switch on the system unit to the off (O) position.
3. Remove the SCSI terminator as shown in Figure 4–1.
4–6 Hardware Options