IBM DS4000 EXP810, Installation, User'S, And Maintenance Manual

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Table 38. Symptom-to-FRU index (continued)
Problem
indicator Component Possible cause Possible solutions
Unable to access
drives Drives and
fibre-channel
loop Incorrect storage
expansion
enclosure ID
settings Ensure that the fibre-channel
optical cables are undamaged
and properly connected. Check
the storage expansion enclosure
ID settings.
Note: For information on how to
change the storage expansion
enclosure ID if required, refer to
the online Help in the DS Storage
Manager GUI.
ESM failure Replace one or both ESMs.
Contact an IBM technical support
representative.
Drive or drives
failed Replace failed drive or drives.
Drive is not certified Check the DS4000 product Web
site for the correct drive option
P/N or FRU P/N certified for your
DS4000 storage subsystem.
Random errors Subsystem Midplane failure Have the midplane replaced.
Contact an IBM technical support
representative.
Hard disk drive
not visible in RAID Several CRUs Drive or drives
failed Replace failed drive or drives.
management
software
FC cable failed Replace FC cable.
SFP failed Replace SFP.
ESM failure Replace ESM.
Midplane failure Have the midplane replaced.
Contact an IBM technical support
representative.
Incorrect firmware
version Verify that the storage subsystem
has been upgraded to the correct
firmware version. Refer to
Table 40 on page 136.
Parts listing
Figure 60 on page 132 and the following table provide a parts listing for the
EXP810.
Chapter 6. Hardware maintenance
131