A cache backup device is currently in write-protect (read-only)
mode. While in write-protect mode, cached data cannot be written to the backup device. The Recovery Guru Details area provides specific information you will need as you follow the recovery steps.
1 |
Stop all I/O from all hosts to this storage subsystem. When the Cache Active LED on the controller is no longer
blinking (may take several minutes), proceed to step 2. Caution: Risk of Data Loss.
You must wait for the Cache Active LED to stop blinking to
ensure that all cache has been written to disk.
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2 |
Click the Save As button in the Recovery Guru dialog to save
the remaining steps to file. The remaining Recovery
Steps will no longer be accessible from the Recovery Guru dialog after you complete step 3. |
3 |
Remove the controller canister
that contains the affected cache backup device (listed in the
Component requiring service field in the Details area). |
4 |
Refer to the Enterprise Management Window (EMW) to view which management method you are using to manage this storage subsystem.
If... |
Then... |
You are using In-Band management for
ALL hosts attached to this storage subsystem |
Go to step 5. |
You are using Out-of-Band management for ANY host attached to this storage subsystem |
Before you insert a new controller canister into the storage subsystem, you must update the DHCP/BOOTP server so that it will associate the new controller's hardware Ethernet (MAC) address with the
DNS/network name and IP address previously assigned to the removed controller.
To update the DHCP/BOOTP server, find the entry associated with the removed controller and replace its Ethernet (MAC) address with the new controller's Ethernet (MAC) address. The controller's Ethernet (MAC) address is located on an Ethernet ID label on the controller canister in the form xx.xx.xx.xx.xx.xx.
When you are finished, go to step 5.
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5 |
If the new controller canister does NOT contain a battery, insert the battery from the old controller canister into the new replacement controller canister. Consult your hardware documentation for details.
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6 |
Insert the controller
canister securely into place. After the controller appears in
the Physical View of the AMW, go to
step 7. Note: Write caching will be reinstated (if
applicable for each logical drive) once the controller's battery is
fully charged and has completed any required learn cycles (if
applicable).
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7 |
Click the Recheck button to rerun the Recovery Guru. The failure should no longer appear in the Summary area. If the failure appears again, contact your technical support representative. |