Lenovo ThinkServer RD330 MegaRAID SAS Software User Guide - Page 199

MegaRAID SAS Software User Guide Chapter 5: MegaRAID Command Tool | Virtual Drive-Related Options 5.14.2 Change the Virtual Drive Cache and Access Parameters Use the command in the following table to change the cache policy and access policy for the virtual drive(s) on the selected controller(s). Table 73: Change Virtual Drive Cache and Access Parameters Convention Description MegaCli -LDSetProp WT | WB [-Immediate]| RA |NORA | ADRA|-Cached|Direct|CachedBadBBU|NoCachedBadBBU} | -RW|RO|Blocked | {-Name nameString} | -EnDskCache|DisDskCache -Lx| -L0,1,2|-Lall -aN|-a0,1,2|-aALL Allows you to change the following virtual drive parameters: -WT (Write through), WB (Write back): Selects write policy. -Immediate: Indicates that the changes take place immediately. -NORA (No read ahead), RA (Read ahead), ADRA (Adaptive read ahead): Selects read policy. -Cached, -Direct: Selects cache policy. -CachedBadBBU|NoCachedBadBBU : Specifies whether to use write cache when the BBU is bad. -RW, -RO, Blocked: Selects access policy. -EnDskCache: Enables drive cache. -DisDskCache: Disables drive cache. 5.14.3 Display the Virtual Drive Cache and Access Parameters Use the command in the following table to display cache and access parameters for the virtual drive(s) on the selected controller(s). Table 74: Display Virtual Drive Cache and Access Parameters Convention Description MegaCli -LDGetProp -Cache | -Access | -Name | -DskCache -Lx|-L0,1,2| -Lall -aN|-a0,1,2|-aALL Displays the cache and access policies of the virtual drive(s): -Cache: -Cached, Direct: Displays cache policy. -WT (Write through), WB (Write back): Selects write policy. -NORA (No read ahead), RA (Read ahead), ADRA (Adaptive read ahead): Selects read policy. -Access: -RW, -RO, Blocked: Displays access policy. -DskCache: Displays drive cache policy. Page 199