HP Netserver Service Handbook, Volume 2 - Mid

158
Configuring Switch Settings on the Hot Swap Subsystem
Switches 3, 4 and 6 determine the SCSI address of the shelf.
UPPER
CAGE
1
2
3
4
5
6
LOWER
CAGE
1
2
3
4
5
6
Off
On
The switch 6 setting determines upper and lower cage functionality. Switches 1 and 2 are always set to Off.
Switch Function Settings
1 I
2
C Bus Setting Always set to Off
2 I
2
C Bus Setting Always set to Off
3 High/Low Addresses
Fast-Wide (68 pin) SCSI Only
Sets SCSI addresses for upper or power eight
addresses
On Sets drives to upper eight SCSI
addresses. Note: this setting may cause
time-out problems with your NOS due to
delayed start.
Off Sets drives to lower eight SCSI
addresses.
4 SCSI Address Zero
Sets middle shelf in cage to SCSI ID 0 or ID 8.
ID number depends on the setting of switch 3.
On Sets middle shelf in the cage (shelf
2 or shelf 5) to SCSI ID 0 or ID 8.
Off Sets middle shelf to normal SCSI
address sequence.
5 Remote Start
Determines control of the hot swap disk module
power-on sequence.
On Internal control: Upper cage is set
to delayed start, and lower cage is set to
power-on at startup.
Off Power-on sequence is
determined by the disk array controller.
Not supported by HP SCSI controller
boards.
6 Upper/Lower Cage
Identifies cage location. This is important
information for the SCSI addresses and for the
I
2
C bus.
On Lower cage
Off Upper cage