Parts Listing - IBM DR550 Problem Determination And Service Manual

Parts listing

Figure 8 on page 49 and the following table provide a parts listing for the DR550
Storage Controller.
48
DR550 Version 4.5 Problem Determination and Service Guide
Table 7. Symptom-to-FRU index (continued)
Problem
indicator Component
Unable to access Drives and
drives. fibre-channel
loop
Random errors. Subsystem
Hard disk drive Several CRUs
not visible in
RAID
management
software.
Possible cause Possible solutions
Incorrect enclosure Ensure that the fibre-channel
speed settings 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.
RAID controller Replace one or both RAID
failure controllers. Contact an IBM
technical support representative.
Drive or drives Replace failed drive or drives.
failed
Midplane failure Have the midplane replaced.
Contact an IBM technical
support representative.
Drive or drives Replace failed drive or drives.
failed
FC cable failed Replace FC cable.
SFP failed Replace SFP.
RAID controller Replace RAID controller.
failure
Unsupported Verify that the attached storage
storage expansion expansion enclosures are
enclosure connected supported. In this release, the
DR550 Storage Controller only
supports DR550 Expansion
Drawers (EXP420) not EXP810s.
Drive CRU has Replace the drive CRU.
interface problem
with the ESM or
controller.
Incorrect firmware Verify that the DR550 Storage
version Controller has the correct
firmware version. See DS4200
Installation, User's and
Maintenance Guide.
Midplane failure Have the midplane replaced.
Contact an IBM technical
support representative.