IBM 7870B4U, Service Manual

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Storage drive problems
Use this information to resolve storage drive problems.
Follow the suggested actions in the order in which they are listed in the Action
column until the problem is solved.
v
See Chapter 4, “Parts listing,” on page 41 to determine which components are CRUs and which components
are FRUs.
v
If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Symptom Action
Not all storage drives are
recognized by the Fixed Disk or
SAS Attached Disk diagnostic
test.
1. Remove the storage drive that is indicated by the diagnostic tests. See
Chapter 5, “Removing and replacing blade server components,” on page 49.
2. Run the SAS Fixed Disk or SAS Attached Disk diagnostic test again. See
“Diagnostic tools overview” on page 101.
3.
If the Fixed drive or SAS Attached Disk diagnostic test runs successfully,
replace the storage drive that you removed with a new one. See Chapter 5,
“Removing and replacing blade server components,” on page 49.
The blade server stops
responding during the Fixed
Disk or SAS Attached Disk
diagnostic test.
1. Remove the storage drive that was being tested when the blade server stopped
responding. See Chapter 5, “Removing and replacing blade server
components,” on page 49.
2. Run the SAS Fixed Disk or SAS Attached Disk diagnostic test again (see
“Diagnostic tools overview” on page 101).
3. If the Fixed drive or SAS Attached Disk diagnostic test runs successfully,
replace the storage drive that you removed with a new one. See Chapter 5,
“Removing and replacing blade server components,” on page 49.
A storage drive passes the
Fixed Disk or SAS Attached
Disk diagnostics test, but the
problem remains.
1. Run the SAS Fixed Disk or SAS Attached Disk diagnostic test again. See
“Diagnostic tools overview” on page 101.
2. If the Fixed drive or SAS Attached Disk diagnostic test runs successfully but
the storage drive continues to have a problem, replace the drive with a new
one.
Intermittent problems
Use this information to resolve intermittent problems with the blade server.
Follow the suggested actions in the order in which they are listed in the Action
column until the problem is solved.
Chapter 6. Diagnostics
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