Table 51. Symptom-to-FRU index (continued)
Problem
indicator Component Possible cause Possible solutions
Hard disk drive
not visible in RAID
management
software
Several CRUs Drive or drives
failed
Replace failed drive or drives.
FC cable failed Replace FC cable.
SFP failed Replace SFP.
RAID controller
failure
Replace RAID controller.
Midplane failure Have the midplane replaced.
Contact an IBM technical support
representative.
Drive CRU has
interface problem
with the ESM or
controller.
Replace the drive CRU.
Incorrect firmware
version
Verify that the DS4700 Express
Storage Subsystem has the
correct firmware version. Refer to
“Software and hardware
compatibility and upgrades” on
page 20.
A controller has
failed in addition to
the ESM failure in
the drive channel
that originates from
the functioning
controller.
Replace the failed controller and
ESM.
Parts listing
Figure 120 on page 189 and the following table provide a parts listing for the
DS4700 Express.
188 IBM System Storage DS4700 Express Storage Subsystem: Installation, User’s and Maintenance Guide
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