HP Surestore HVD10 - Disk System Service Manual page 107

Problem LED
Description State
Alarm sounds BCC and
when BCC is system fault
inserted LEDs flash
EMS reports Disk module
critical errors LED is on or
off
IOSCAN (HP- On or off
UX) lists disk
as NO_HW, or
Mapper or
DSTAT ALL
(MPE/iX) lists
no device type
SCSI cable is Bus active
connected but LED is off
corresponding
LED is off
Probable Cause/Solution
Internal or external DIP switches on the new BCC do not match
the DIP switch settings on the installed BCC.
Use diagnostic utilities (STM or Sysdiag) to determine disk status.
Depending on the results, monitor or replace disk module.
– Disk module is faulty. Replace.
– Backplane is faulty. Replace.
– If the all disks on the bus have this problem, the cable is faulty.
Replace the cable.
– If all disks in the disk system have this problem, the BCC is
faulty. Replace the BCC.
– The host is not on.
– The disk system is connected in an invalid configuration.
Reconnect in a valid configuration (see chapter 3).
– The HBA is faulty. Troubleshoot the HBA.
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