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SRN
Problem
42525
Description: A fast-write logical disk contains unsynchronized data, but the
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Fast-Write Option Card does not contain that data. The failing disk drive is
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offline.
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Action:
v If the disk drive has just been moved from another adapter, do either of
the following actions:
– Return the disk drive to its original adapter.
– Move the original Fast-Write Cache Option Card to this adapter so
that the data can be synchronized.
v If the wrong Fast-Write Cache Option Card has been installed (for
example, if the adapter has been exchanged, but the original
Fast-Write Cache Option Card is still on the old adapter card), install
the original Fast-Write Cache Option Card onto this adapter.
v If the adapter card has been switched off for more than seven days,
the battery is discharged and data has been lost. If the adapter card
has been switched off for fewer than seven days, exchange the
Fast-Write Cache Option Card for a new one, then do the following:
1. Ask the customer to disable the Fast-Write option for:
– Each device for which the Fast-Write option is offline
– All other devices that are connected to the failing adapter and
have the Fast-Write option enabled.
For instructions on how to disable the Fast-Write option, see
"Dealing with Fast-Write Problems" on page 218.
2. If the Fast-Write option has been disabled for a RAID-5 array, the
hdisk for that array can no longer be configured. Delete the RAID-5
array, then recreate it. For instructions on how to delete the array,
see "Deleting an SSA RAID Array" on page 70.
3. Ask the customer to re-enable the Fast-Write option for the devices
that are attached to the Fast-Write Cache Option Card.
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42527
Description: A dormant fast-write cache entry exists. The fast-write cache
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contains unsynchronized data for a disk drive that is no longer available.
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Action: If possible, reconnect the disk drive to the adapter to enable the
data to be synchronized. If you cannot reconnect the disk drive (for
example, because the disk drive has failed), the user should delete the
dormant fast-write cache entry (see "Enabling or Disabling Fast-Write for
Multiple Devices" on page 215).
420
User's Guide and Maintenance Information
Possible Causes
v The data was not
synchronized on the old
adapter before the disk drive
was moved to this adapter.
v The wrong Fast-Write Option
Card was installed onto this
adapter.
v The Fast-Write Option Card
lost the data because the
battery failed.
Possible FRUs:
Fast-Write Cache Option
Card (100%) ("Removing
the Fast-Write Cache Option
Card of an Advanced
SerialRAID Adapter" on
page 332).
User or service action.
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