Avago Technologies MegaRAID Fast Path Software - Manual (Page 329)

LSI Corporation Confidential | July 2011 Page 329
MegaRAID SAS Software User Guide Chapter 7: MegaRAID Storage Manager Window and Menus | MegaRAID Storage Manager Main Menu
7.2.10.3 Group Show Progress for
Virtual Drive Erase The virtual drive erase operation is a time-consuming operation and is performed as a
background task. It posts events to notify users of the progress.
To view the progress of Group Show Progress-Virtual Drive , click the Show Progress
toolbar icon.
You can also either select Show Progress from the Manage menu, or select the More
info Link under Background Operations portlet on the dashboard.
The Virtual Drive Erase progress bar appears, as shown in Figure 199 .
Figure 199: Group Show Progress – Virtual Drive
7.2.11 Rebuild Write Cache MegaRAID firmware supports drive cache properties during a rebuild operation. The
MegaRAID solution temporarily enables drive cache for the physical drive that is being
rebuilt for the duration of the rebuild operation. Users can enable or disable this feature
using the Mega CLI feature.
The MegaRAID software automatically changes the setting for a drive that is being
rebuilt. If the PD_CACHE for the rebuilt drive is already set, the firmware does not need
to do anything extra.
The firmware identifies and sets the cache policy of the drives whenever a rebuild
operation starts and the catch policy is reflected in the event logs. The firmware also
makes sure to flush the cache just before committing the drive to the disk group.