Dell PowerVault MD3420 - Manual (Page 319)

Notes
When you use this command, you can specify one or more of the optional parameters.
Set Virtual Disk
Description
This command defines the properties for a virtual disk. You can use most of the parameters to define
properties for one or more virtual disks, however, some of the parameters define properties for only one
virtual disk at a time. The syntax definitions are separated to show which parameters apply to several
virtual disks and which apply to only one virtual disk. The syntax for virtual disk mapping is listed
separately.
Syntax Applicable To One Or More Virtual Disks
set (allVirtualDisks | virtualDisk
[“virtualDiskName”] |
virtualDisks [“virtualDiskName1” ...
“virtualDiskNameN”] |
virtualDisk <wwID>)
cacheFlushModifier=cacheFlushModifierValue
cacheWithoutBatteryEnabled=(TRUE | FALSE)\
mediaScanEnabled=(TRUE | FALSE)
mirrorCacheEnabled=(TRUE | FALSE)
modificationPriority=(highest | high | medium |
low | lowest) owner=(0 | 1)
readCacheEnabled=(TRUE | FALSE)
writeCacheEnabled=(TRUE | FALSE)
cacheReadPrefetch=(TRUE | FALSE)
CAUTION: Enabling Write Cache on a virtual disk generally improves performance for
applications with significant Write content (unless the application features a continuous string of
Writes. However, Write Cache does introduce some risk of data loss in the unlikely event of a
RAID controller module failure.
Syntax Applicable To Only One Virtual Disk
set (virtualDisk [“virtualDiskName”] | virtualDisk <wwID>)
addCapacity=virtualDiskCapacity
[addPhysicalDisks=(enclosureID1,slotID1
enclosureID2,slotID2 ... enclosureIDn,slotIDn)]
consistencyCheckEnabled=(TRUE | FALSE)
segmentSize=segmentSizeValue
userLabel=virtualDiskName
preReadRedundancyCheck=(TRUE | FALSE)
Syntax Applicable To Virtual Disk Mapping
set (virtualDisk [“virtualDiskName”] | virtualDisk <wwID>)
accessVirtualDisk)
logicalUnitNumber=LUN
(host=”hostName” | hostGroup=(“hostGroupName” |
defaultGroup)
319