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Chapter 6: Identifying Failed System Components
For SP failure, the unsolicited event log contains the message “Peer
Controller: Removed.” You can also use raid5 getcrus to verify the failed SP,
as explained in Chapter 3. The getcrus output indicates the failed SP, for
example, “SPA State: Not Present.”
Using the Auto-Reassign Capability
If one of two SPs becomes physically unavailable to the system, that is, if an
SP fails or becomes disconnected, the CHALLENGE RAID storage system
can automatically reassign the LUNs it controls to the remaining SP.
Note the following points:
•
Auto-reassign capability cannot be used in the case of problems caused
by a defective CHALLENGE-to-CHALLENGE RAID connection, such
as a damaged cable.
•
To enable auto-reassign, power off the failed SP. You do not need to
power down the CHALLENGE RAID storage system.
Caution:
Do not power off the SP under any circumstances other than
to enable auto-reassign.
•
Powering off an SP requires opening the fan module at the back of the
storage system. Because the fan module must not be left in the open
position for more than two minutes, make sure you can complete this
process within that time limit.
Follow these steps:
Caution:
To prevent thermal shutdown of the storage system, never operate
the storage system for more than two minutes with the fan module in the
open position. Do not use this procedure under any circumstances other
than to enable auto-reassign.
