Lenovo ThinkServer RD330 MegaRAID SAS Software User Guide - Page 183

MegaRAID SAS Software User Guide Chapter 5: MegaRAID Command Tool | Controller Property-Related Options 5.8.4 Flush Controller Cache 5.8.5 Set Controller Properties Use the command in the following table to flush the controller cache on the selected controller(s). This option sends the contents of cache memory to the virtual drive(s). If the MegaRAID system must be powered down rapidly, you must flush the contents of the cache memory to preserve data integrity. Table 40: Cache Flush on Selected Controller Convention Description MegaCli -AdpCacheFlush -aN|-a0,1,2|-aALL Flushes the controller cache on the selected controller(s). This command sets the properties on the selected controller(s). 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: We recommend the default rebuild rate of 30 percent, and the default patrol read rate of 30 percent. Use the command in Table 41 to display the list of properties you can set for the controller(s). Page 183