SRN Problem Possible Causes
43PAA Description:An SSA device on the link is preventing the completion of the
loop configuration.
Action: If the SSAservice aids are available, run the Link Verification
service aid (see “Link VerificationService Aid”on page 383) to determine
which device is preventing configuration. (That device is the one beyond
the last-configured device on an open SSAloop.)
If the SSAservice aids are not available, note the value of PAA in this
SRN, and go to “Finding the Physical Location of a Device”on page 409.
Possible FRUs:
Device (90%) (“Exchanging
Disk Drives”on page 319).
SSAadapter card (10%)
(“Removing and Replacing
anAdvanced SerialRAID
Adapter”on page 327).
44PAA Description:An SSA device has a ‘Failed’status.
Action: If the SSAservice aids are available, run the Link Verification
service aid (see “Link VerificationService Aid”on page 383) to find the
failing device. If no device is listed with a status of “Failed”, use the PAA
part of the SRN to determine which device is failing. Before you exchange
the failing device, run diagnostics in System Verificationmode to that
device to determine the cause of the problem.
If the SSAservice aids are not available, note the value of PAA in this
SRN, and go to “Finding the Physical Location of a Device”on page 409.
Exchange the failing FRU for a new FRU.
Possible FRUs:
Device (100%)
(“Exchanging Disk Drives”
on page 319).
45PAA Description: The SSAadapter has detected an open SSA loop.
Action: If the SSAservice aids are available, run the Link Verification
service aid (see “Link VerificationService Aid”on page 383) to determine
which part of the SSAloop is failing.
If the SSAservice aids are not available, note the value of PAA in this
SRN, and go to “Finding the Physical Location of a Device”on page 409.
Then go to “SSALink Errors”on page478 to solve the problem.
Possible FRUs:
Device (40%) (“Exchanging
Disk Drives”on page 319).
SSAadapter card (40%)
(“Removing and Replacing
anAdvanced SerialRAID
Adapter”on page 327).
External SSA cables,
Fibre-Optic Extenders,
fiber optic cables, or
internal connections in
the device enclosure
(20%) (enclosure service
information).
46000 Description: An array is in the Offline state because not enough disk
drives are present in the array to maintain data availability.
Action: If the SSAservice aids are available, run the Link Verification
service aid (see “Link VerificationService Aid”on page 383) to find power
faults or broken SSAlinks that might be causing this problem.
If the SSAservice aids are not available, or the problem remains, go to
“MAP 2324: SSA RAID”on page 454 to isolate the problem.
vFor a RAID-0 or a
RAID-Copy array,at least
one member disk drive of the
array is missing.
vFor a RAID-5 array,at least
two member disk drives
cannot be accessed.
vFor a RAID-10 array,at least
one mirrored pair of disk
drives cannot be accessed.
vPower problem.
vSystem configuration
problem.
Chapter18. SSA Problem Determination Procedures 423
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