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148 Configuration: Premium Feature—Snapshot Virtual Disks
Creating a Snapshot Virtual Disk Using the
Advanced Path
About the Advanced Path
Use the advanced path to choose whether to place the snapshot repository
virtual disk on free capacity or unconfigured capacity and to change the
snapshot repository virtual disk parameters. You can select the advanced path
regardless of whether you use free capacity or unconfigured capacity for the
snapshot virtual disk.
Using the advanced path, you can specify the following parameters for your
snapshot virtual disk:
• Snapshot Virtual Disk Name—A user-specified name that helps you
associate the snapshot virtual disk to its corresponding snapshot repository
virtual disk and source virtual disk.
• Snapshot Repository Virtual Disk Name—A user-specified name that
helps you associate the snapshot repository virtual disk to its corresponding
snapshot virtual disk and source virtual disk.
• Capacity Allocation—This parameter allows you to choose where to create
the snapshot repository virtual disk. You can allocate capacity by using one
of the following methods:
– Use free capacity on the same disk group where the source virtual
disk resides.
– Use free capacity on another disk group.
– Use unconfigured capacity and create a new disk group for the
snapshot repository virtual disk.
– Dell recommends placing the snapshot repository virtual disk within
the disk group of the source virtual disk. This ensures that if drives
associated with the disk group are moved to another storage array, all
the virtual disks associated with the snapshot virtual disk remain in
the same group.
• Snapshot Repository Virtual Disk Capacity—The snapshot repository
virtual disk capacity is expressed as a percentage of the source virtual disk
capacity. The maximum percentage allowed is 120 percent.
book.book Page 148 Wednesday, June 8, 2011 5:01 PM