HP Surestore Disk Array 12h - And FC60 Service Manual page 250

Table 33
Troubleshooting Controller Enclosure Midplane Problems (cont'd)
Symptom
Software errors occur
when attempting to
access controller or
disks
Controller Enclosure Troubleshooting
250
Possible Cause
A Software function or
configuration problems
B Controller enclosure
power switches or main
circuit breakers in
rackmount cabinet
turned off
C Loose, disconnected, or
defective interface
cables
D Improper ID settings
E Failed controller
enclosure or disk
F Failed controller
enclosure midplane
Procedure
– Check the appropriate software and
documentation to make sure the system
is set up correctly or that the proper
command was executed.
– Make sure that all power switches are
turned on.
– Check all the cables between the host,
controller enclosure, disk enclosure, and
other devices on the network. Make sure
they are undamaged (particularly fibre
optic and SCSI cables) and securely
attached.
– Make sure that the Fibre host IDs and
SCSI disk enclosure IDs are set properly
for all devices, particularly if you just
removed or added a new device to the
network.
– Check the controller enclosure for a
controller fault. If the Controller LED on
the front cover is turned on, replace the
controller.
– Check the disk enclosure for a disk fault.
If a failed disk is indicated, replace the
disk.
– Replace the controller enclosure
midplane.