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Note: If both drives in a RAID 10 mirrored set are faulted, the data is not recoverable. Up to half of the drives in a RAID 10 unit can become defective and still have the user data retained, as long as the failed drives are only half of each mirrored pair.
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Note: If a rebuild fails, check the Alarms page for the reason. If there was an ECC error on the source disk, you can force the rebuild to continue by checking the Overwrite ECC policy on the Controller Settings page in 3DM and then running Rebuild again. This will cause uncorrectable blocks to be rewritten and the data may be incorrect. It is recommended that you execute a file system check when the rebuild completes. Under Windows, you can do this by right-clicking on the Drive and choosing Properties; then on the Tools tab, click Check Now. Under Linux or FreeBSD use fsck /dev/sda1.
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In 3DM, choose Management > Maintenance.
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In the Unit Maintenance section of the Maintenance page, select the degraded unit and click the Rebuild Unit button.
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When a dialog box displays available drives, select the drive you want to replace the failed drive and click OK.
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If the degraded unit has more than one failed drive (for example, a RAID 10 where both mirrored pairs each have a failed drive), repeat step 3 and step 4 to select another drive.
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Note: If you need to cancel a rebuild, you can do so by using the Remove Drive link on the Maintenance page to remove the drive from the unit.
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If your degraded unit has a drive indicated as Not in Use, the drive may still be usable. Try rebuilding with the Not in Use drive intact. Simply select the unit (highlight it and press Enter) and then select the Rebuild Unit button.
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When the Rebuild confirmation screen appears, confirm that you selected the correct unit by selecting OK.
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Press F8 to save your changes and exit 3BM. The unit will begin rebuilding after the operating system finishes loading.
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If your system has hot swap bays, you can replace the failed or Not In Use drive and rescan (Alt-R) the unit.
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If your system does not have hot swap bays, power down the system and replace the failed or Not In Use drive. Then power on the system and restart 3BM.
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At the main 3BM screen, highlight an available drive to replace the faulted drive and press Enter to select it.
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AMCC 2004-2008
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