Viewing Virtual Drive Properties Select a virtual drive from a drive group in the controller dashboard to view its properties. Table 8. Virtual Drive Properties Property Description MegaRAID iMegaRAID Initiator- Target Status The current status of the virtual drive. The following options are available: Optimal Partially Degraded Degraded Offline Yes Yes No Read Policy The read cache policy for the virtual drive. The following options are available: Read Ahead No Read Ahead Yes Yes No Write Policy The write cache policy for the virtual drive. The following options are available: Write Back Write Through Always Write Back Yes Yes No IO Policy The input/output policy for the virtual drive. The following options are available: Direct IO Cached IO Yes Yes No Host Access Policy NOTE This property appears only if the controller supports High Availability DAS. Indicates whether or not the virtual drive is shared between the servers in a cluster. The values for this property are Shared, Exclusive, and Exclusive to Peer Controller. No No No Peer Has No Access NOTE This property appears only if the controller supports High Availability DAS. Indicates whether the peer controller has access to the shared virtual drive. This property appears only if the virtual drive is shared. No No No Access Policy The access policy for the virtual drive. The following options are available: Read Write Read Only Hidden The Hidden policy is applicable for only hidden VDs. No other access policies will be applicable once you select Hidden as the access policy. Yes Yes No Drive Cache The virtual drive cache setting. The following possible options are available: Unchanged Enable Disable Yes Yes No Data Protection Indicates if data protection feature is enabled for the virtual drive. Yes Yes No SSD Caching Indicates if SSD caching is enabled. Yes Yes No
Viewing Virtual Drive Properties
Select a virtual drive from a drive group in the controller dashboard to view its properties.
Table 8. Virtual Drive Properties
Property
Description
MegaRAID
iMegaRAID
Initiator- Target
Status
The current status of the virtual drive. The following options are available:
Optimal
Partially Degraded
Degraded
Offline
Yes
No
Read Policy
The read cache policy for the virtual drive. The following options are available:
Read Ahead
No Read Ahead
Write Policy
The write cache policy for the virtual drive. The following options are available:
Write Back
Write Through
Always Write Back
IO Policy
The input/output policy for the virtual drive. The following options are available:
Direct IO
Cached IO
Host Access Policy
NOTE This property appears only if the controller supports High Availability DAS.
Indicates whether or not the virtual drive is shared between the servers in a cluster. The values for this property are Shared, Exclusive, and Exclusive to Peer Controller.
Peer Has No Access
Indicates whether the peer controller has access to the shared virtual drive. This property appears only if the virtual drive is shared.
Access Policy
The access policy for the virtual drive. The following options are available:
Read Write
Read Only
Hidden
The Hidden policy is applicable for only hidden VDs. No other access policies will be applicable once you select Hidden as the access policy.
Drive Cache
The virtual drive cache setting. The following possible options are available:
Unchanged
Enable
Disable
Data Protection
Indicates if data protection feature is enabled for the virtual drive.
SSD Caching
Indicates if SSD caching is enabled.