Dell PowerVault MD3260i - Manual (Page 173)

Parameter Description
the RAID controller module firmware determines the
owner.
mapping This parameter enables you to map the virtual disk to a
host. If you want to map later, set this parameter to none.
If you want to map the virtual disk now, set this parameter
to default, and the virtual disk is mapped to all hosts
that have access to the storage pool.
The default option is none.
warningThreshold Valid values are from 1 to 100.
The default value is determined by the RAID controller
module firmware.
Setting this parameter to 100 disables warning alerts.
repositoryExpansionPolicy Valid values are automatic and manual.
cacheReadPrefetch The setting to turn on or turn off cache read prefetch. To
turn off cache read prefetch, set this parameter to
FALSE. To turn on cache read prefetch, set this
parameter to TRUE.
segmentSize Amount of data (in kilobytes) that the RAID controller
module writes on a single physical disk in a virtual disk
before writing data on the next physical disk. Valid values
are 8, 16, 32, 64, 128, 256, or 512. For information
about the segmentSize parameter, see Using the Auto
Configure Command.
usageHint Valid values are multiMedia, database or
fileSystem.
Create Read-Only Snapshot Virtual Disk
Description
This command creates a read-only snapshot virtual disk for the snapshot images of a base virtual disk. To change a
read-only snapshot virtual disk to a read/write virtual disk, use the set snapVirtualDisk
convertToReadWrite command.
NOTE: You cannot use this command for a snapshot image that is used in online virtual disk copy.
Syntax
create snapVirtualDisk userLabel="snapVirtualDiskName"
snapImageID="snapImageID" readOnly
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