Dell PowerVault MD3200 Series, Cli Manual

Page: 69 / 279

Using the Snapshot Feature
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Define the capacity of a snapshot repository virtual disk as any percentage of
the size of the source virtual disk. A value of 20 percent is a good compromise
between size and speed. In the previous example, the size of the snapshot
repository is set to 4 GB. The underlying assumption is that the source virtual
disk size is 20 GB (0.2 x 20 GB = 4 GB).
The following example is the script file version of the command:
create snapshotVirtualDisk sourceVirtualDisk=
"Mars_Spirit_4" repositoryDiskGroup=2
freeCapacityArea=2;
Creating a Snapshot Virtual Disk by Specifying a Number of
Physical Disks
With this version of the create snapshotVirtualDisk command, you must
specify the number of physical disks and the RAID level for the snapshot
repository virtual disk. This version of the create snapshotVirtualDisk
command creates a new disk group. You must have physical disks in the
storage array that are not assigned to a disk group for this command to work:
create snapshotVirtualDisk sourceVirtualDisk=
"sourceVirtualDiskName" [repositoryRAIDLevel=(0 |
1 | 5 | 6) repositoryPhysicalDiskCount=
numberOfPhysicalDisks
physicalDiskType=(SAS |
SATA) userLabel= "snapshotVirtualDiskName"
warningThresholdPercent= percentValue
repositoryPercentOfSource= percentValue
repositoryUserLabel= "repositoryName"
repositoryFullPolicy=(failSourceWrites |
failSnapShot)] [enclosureLossProtect=(TRUE |
FALSE)]
NOTE:
Use one or all optional parameters as needed to define your configuration.
It is not necessary to use any optional parameters.
The following example is a command in which users specify the number of
physical disks:
client>smcli 123.45.67.89 -c "create
snapshotVirtualDisk sourceVirtualDisk=
\"Mars_Spirit_4\" repositoryRAIDLevel=5
repositoryPhysicalDiskCount=3;"
book.book Page 69 Friday, March 4, 2011 10:45 AM