Avago Technologies MegaRAID Fast Path Software - Manual (Page 224)

Page 224 LSI Corporation Confidential | July 2011
MegaRAID SAS Software User Guide Chapter 5: MegaRAID Command Tool | CacheCade Related Options
5.5.6 Remove Blocked Access on a
Virtual Drive
Use this command in the following table to change the access policy for a virtual drive
by removing a blocked access on that virtual drive. At times, an error may occur in the
CacheCade Pro 2.0 virtual drive and this causes a blocked access to the associated
virtual drive.
5.5.7 Create RAID 0 Configuration
with SSD Caching
Use this command in the following table to create virtual drives with RAID 0
configurations and enable SSD caching on them
Table 31: Remove Blocked Access on a Virtual Drive
Convention MegaCLI -LDSetProp {-Name LdNamestring} |
-RW|RO|Blocked|RemoveBlocked | WT|WB|ForcedWB
[-Immediate]|RA|NORA|ADRA …………. -aN|-a0,1,2|-aALL
Description Allows you to change the following virtual drive parameters:
[WT|WB|ForcedWB]: Specifies the write policy- WT (Write Through, WB
(Write Back), ForcedWB (Forced Write Back). If you specify the ForcedWB
parameter, the write policy will always be writeback, even if the virtual drive
becomes degraded.
-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.
-RemoveBlocked : Removes the blocked access on the associated virtual
drive.
-EnDskCache : Enables drive cache.
-DisDskCache : Disables drive cache.
Table 32: Create RAID 0 Configuration with SSD Caching
Convention MegaCLI -CfgEachDskRaid0 [WT|WB] [NORA|RA|ADRA]
[Direct|Cached] [CachedBadBBU|NoCachedBadBBU]
[-strpszM]|[FDE|CtrlBased] [-Default| -Automatic|
-None| -Maximum|-MaximumWithoutCaching] [-Cache]
-aN|-a0,1,2|-aALL
Description Creates virtual drives with RAID 0 and enables SSD caching on these newly
created virtual drives.
-WT (Write through), WB (Write back): Selects write policy.
-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.
[-Default| -Automatic| -None| -Maximum|
-MaximumWithoutCaching]
: If the controller supports power savings on
virtual disk, these options specify the possible levels of power savings that can
be applied on a virtual disk.
[-Cache]: Specifies that SSD caching is enabled.