HP SureStore E Disk Array 12H User's and Service Manual (C5445-90901, September 1999)

Removal and Replacement
Backplane Assembly–HP-qualified personnel only
198
Removal
Table 15. SCSI Bus Reset Switch Functions
Switch Number 1 2 3 4
SCSI Bus
Switch Name
Bus Y
Power Detect
Bus Y
Controller Detect
Bus X
Power Detect
Bus X
Controller Detect
SCSI Bus Default
Switch Setting
OFF
(Disabled)
ON
(Enabled)
OFF
(Disabled)
ON
(Enabled)
Switch Function
When Enabled
When the Bus Y
Power Detect Switch
is enabled, the disk
array controller
generates a SCSI Bus
Reset on Bus Y
whenever power is
applied or removed.
When the Bus Y
Controller Detect
Switch is enabled
(default), the disk
array controller
generates a SCSI Bus
Reset on Bus Y
whenever disk array
controller Y is
inserted or removed.
When the Bus X
Power Detect Switch
is enabled, the disk
array controller
generates a SCSI Bus
Reset on Bus X
whenever power is
applied or removed.
When the Bus X
Controller Detect
Switch is enabled
(default), the disk
array controller
generates a SCSI Bus
Reset on Bus X
whenever disk array
controller X is
inserted or removed.
Switch Function
When Disabled
When the Bus Y
Power Detect Switch
is disabled (default),
the disk array
controller will not
generate a SCSI Bus
Reset on Bus Y
whenever power is
applied or removed.
When the Bus Y
Controller Detect
Switch is disabled,
the disk array
controller will not
generate a SCSI Bus
Reset on Bus Y
whenever disk array
controller Y is
inserted or removed.
When the Bus X
Power Detect Switch
is disabled (default),
the disk array
controller will not
generate a SCSI Bus
Reset on Bus X
whenever power is
applied or removed.
When the Bus X
Controller Detect
Switch is disabled,
the disk array
controller will not
generate a SCSI Bus
Reset on Bus X
whenever disk array
controller X is
inserted or removed.