21
SCSI SWITCH (FOR AS/400
®
)
This program will accept the name of the tape drive and attempt to vary
the tape drive on (
1)
. If the tape unit has been allocated to another system,
the program will issue a delay of 5 minutes and attempt to allocate the tape
unit again (
2)
.
If allocation is successful, the save is processed, and upon completion
the tape unit is de-allocated (
3)
.
4.2 Overview of the Front Panel
Once it is installed, the SCSI Switch is primarily controlled by the AS/400
software. But, the SCSI Switch also provides manual override and lets you
load new microcode into the SCSI Switch controller.
The front panel shows the status of the SCSI Switch, and controls each SCSI
Switch controller board. A SCSI Switch (part number SW847A) has one front
panel module, and the SCSI Switch (part number SW848A) has two front
panel modules. Each module has the following indicators and controls
(
Figure 4-2
).
Table 4-1. Indicators and Controls.
Indicators
Controls
Host A Active light
Manual switch
Switch Ready light
Host B Active light