Lenovo ThinkServer RD330 - Change the Virtual Drive Cache and Access Parameters; Display the Virtual Drive Cache and Access Parameters

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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).
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 73: Change Virtual Drive Cache and Access Parameters
Convention 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
Description 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.
Table 74: Display Virtual Drive Cache and Access Parameters
Convention MegaCli –LDGetProp -Cache | -Access | -Name |
-DskCache -Lx|-L0,1,2| -Lall -aN|-a0,1,2|-aALL
Description 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.