Parts Listing - IBM DS4200 Installation, User's, And Maintenance Manual

Table 33. Symptom-to-FRU index (continued)
Problem
indicator
Unable to access
drives
Random errors
Hard disk drive
not visible in RAID
management
software

Parts listing

Figure 81 on page 141 and the following table provide a parts listing for the DS4200
Express.
140
IBM System Storage DS4200 Express Storage Subsystem: Installation, User's and Maintenance Guide
Component Possible cause
Drives and Incorrect enclosure
fibre-channel speed settings
loop
RAID controller
failure
Drive or drives
failed
Subsystem Midplane failure
Several CRUs Drive or drives
failed
FC cable failed
SFP failed
RAID controller
failure
Unsupported
storage expansion
enclosure
connected
Drive CRU has
interface problem
with the ESM or
controller.
Incorrect firmware
version
Midplane failure
Possible solutions
Ensure that the fibre-channel
optical cables are undamaged
and properly connected. Check
the enclosure speed settings.
Note: Change the enclosure
speed switch position only when
your storage subsystem is
powered off.
Replace one or both RAID
controllers. Contact an IBM
technical support representative.
Replace failed drive or drives.
Have the midplane replaced.
Contact an IBM technical support
representative.
Replace failed drive or drives.
Replace FC cable.
Replace SFP.
Replace RAID controller.
Verify that the attached storage
expansion enclosures are
supported. In this release, the
DS4200 Express Storage
Subsystem only supports
EXP420s not EXP810s.
Replace the drive CRU.
Verify that the DS4200 Express
Storage Subsystem has the
correct firmware version. Refer to
"Software and hardware
compatibility and upgrades" on
page 13.
Have the midplane replaced.
Contact an IBM technical support
representative.