Avago Technologies MegaRAID Fast Path Software - Manual (Page 421)

LSI Corporation Confidential | July 2011 Page 421
MegaRAID SAS Software User Guide Chapter 11: Using MegaRAID Advanced Software | Recovery Advanced Software
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.
11.2.12 Enabling the Recovery
Advanced Software You can enable the Recovery advanced software in the MegaRAID Storage Manager
software. When you enable Recovery, you create two virtual drives, one as a snapshot
base or a source and the other as a snapshot repository. The base virtual drive contains
the data that is stored in the repository virtual drive.
Perform the following these steps to enable MegaRAID recovery:
1. Select the Logical tab on the main menu dialog for the Logical view.
2. Select and highlight a virtual drive from the list of virtual drives.
This is the snapshot base virtual drive.
NOTE: A base virtual drive and a repository virtual drive can be associated with the
same drives or a common set of drives, or the two virtual drives can be located on two
completely separate set of drives. Using a separate set of drives for the base virtual drive
and the repository virtual drives provides a performance advantage over using a
common set of drives.