3ware Escalade ATA RAID Controller Installation Guide
10 Press F8 to rebuild. The rebuild confirmation screen will be dis- played (see Figure 18).
3ware Disk Array Configuration
Creating or destroying arrays will destroy all existing data on their member disk drives. Using a drive for a rebuild will overwrite data on that drive.
Data on the following drives will be destroyed.
Port 3 - QUANTUM FIREBALLP LM30
Update configuration and exit? [Y/N]
F6 Restore Initial Values Esc Cancel | F8 Done |
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Figure 18. Rebuild Confirmation Display
11 Enter Y to update configurations and exit.
Auto rebuild of a mirrored or RAID 5 array
If a hot spare is specified and the mirrored or RAID 5 array degrades, an event notification is generated and the hot spare dynamically replaces the failed drive in the array without user inter- vention. Rebuild will automatically be launched as a background process and an event notification will notify the user when the rebuild process is complete.
3ware Disk Array Configuration Utility
Auto rebuild on power failure
During driver startup 3ware’s auto rebuild feature sets a flag indi- cating that the driver loaded. Upon an orderly shutdown the flag is rewritten, indicating a clean shutdown. During the next system power cycle the firmware queries the flag. For a RAID 1 or 10 con- figuration, if there was a problem, the firmware degrades the sec- ondary drive in the array and starts the background rebuild of the mirrored drive. When the rebuild is complete the two halves of the mirror are redundant again. For a RAID 5 configuration, if there is a problem, the firmware starts the background verification that checks that the parity matches the data.
Cancelling and restarting a rebuild with a new drive
Currently, a rebuild cannot be cancelled using the 3DM software, but a rebuild can be aborted by physically removing the disk used to replace the degraded drive. Abort a rebuild by following the appli- cable procedure below.
If your system has hot swap carriers:
1Remove the disk while the system is powered. The rebuild will be immediately aborted.
2Go to the Configure screen and click the box in front of the disk drive that was removed. Click on Remove Drive.
3Add another drive and click on the box in front of this port. Click on Add Drive. The drive is called “RAID Disk”.
4Click the boxes in front of the RAID Disk and the degraded array. Select Rebuild. The rebuild starts with the new disk drive.
If your system does not have hot swap carriers:
1Power down the system and remove the disk drive that caused the array to become degraded.
2Add a different disk drive to rebuild the array.
3Press Alt + F3 at Boot time to enter 3ware BIOS.
4Select the degraded array and the newly added drive.
5Select Rebuild.
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