Avago Technologies MegaRAID Fast Path Software - Manual (Page 232)

Page 232 LSI Corporation Confidential | July 2011
MegaRAID SAS Software User Guide Chapter 5: MegaRAID Command Tool | Controller Property-Related Options
5.8.4 Flush Controller Cache Use the command in the following table to flush the controller cache on the selected
controllers. This option sends the contents of cache memory to the virtual drives. If the
MegaRAID system must be powered down rapidly, you must flush the contents of the
cache memory to preserve data integrity.
5.8.5 Set Controller Properties This command sets the properties on the selected controllers. For example, for
{RebuildRate -val}
, you can enter a percentage between 0 percent and 100
percent as the value for the rebuild rate. (The rebuild rate is the percentage of the
compute cycles dedicated to rebuilding failed drives.) At 0 percent, the rebuild is done
only if the system is not doing anything else. At 100 percent, the rebuild has a higher
priority than any other system activity.
NOTE: LSI recommends the default rebuild rate of 30 percent, and the default patrol
read rate of 30 percent.
Use the command in Table 51 to display the list of properties you can set for the
controllers.
Table 50: Cache Flush on Selected Controller
Convention MegaCli –AdpCacheFlush -aN|-a0,1,2|-aALL
Description Flushes the controller cache on the selected controllers.