Recovery Scenarios
Keywords: MegaRAID SAS SW UG

> Recovery Scenarios

> There are three primary scenarios in which to use the Recovery feature:

> 1. | Restore the missing or deleted files (restore from view) with the following steps:

> a. | Discover which file is missing or corrupted.

> b. | Review the Snapshot views of the file content (also known as mounting the snapshot) from each PiT until you find an earlier version of the missing or corrupted file. A mounted view appears as another drive letter in the Windows Explorer window.

> c. | Drag and drop the earlier version of the file from the Snapshot view back into the online storage volume that was the source of the snapshot.

> 2. | If there is a corrupt volume or operating system, roll back the volume to a previous state with the following steps:

> a. | Restart the system, and press Ctrl+H during the power-on self-test (POST).

> b. | In the WebBIOS™ window, select the corrupted virtual drive, and, on the next dialog that appears, select the Adv Opers option.

> c. | Select Rollback, and designate the most recent PiT from the drop-down list.

> d. | Click Go, and exit WebBIOS.

> The system reboots.

> e. | Begin debug and verification procedures on the volume.

> You can follow these same steps to roll back to previous PiTs.

> 3. | Reduce the risk of extended downtime during the application updates and upgrades in the IT center with the following steps:

> a. | When the application is offline, take a snapshot of the application volume.

> b. | Install each patch individually, and test for any new defects that might have been introduced.

> c. | Take a snapshot after you test each patch, and determine that it is clean.

> d. | If a defect is introduced, roll back to the previous installation, and bypass the installation of the defective patch.

> NOTE If the volume is still damaged, continue to select from the next most current PiT to the oldest.

DB09 000202-16 37857-03, Rev R, July 2014
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