Dell POWERVAULT MD3600F Owner's Manual page 161

NOTE:
The physical disks that is displayed has a capacity that is either the
same size or larger than the capacity of the physical disks already being used
by the disk group.
9 Select either a single physical disk to add or two physical disks to add.
10 Click Add.
The Add Physical Disks window closes.
11 Check the Physical Disks to add [enclosure, slot] area to ensure that the
correct physical disks are added.
12 Either accept the final capacity, or enter or select the appropriate capacity
in Increase capacity by field.
13 Click OK.
The Logical tab is updated. The snapshot repository virtual disk that is
having its capacity increased shows a status of Operation in Progress. In
addition, the snapshot repository virtual disk shows its original capacity
and the total capacity being added. The Free Capacity node involved in
the increase shows a reduction in capacity. If all of the free capacity is used
to increase the size of the virtual disk, the Free Capacity node involved is
removed from the Logical tab.
A new Free Capacity node is created and shown in the Logical tab if these
conditions exist:
• A Free Capacity node did not exist prior to the addition of capacity.
• Not all of the capacity that is added is used to increase the capacity of
the snapshot repository virtual disk.
On the Physical tab, the unassigned physical disks or unconfigured
capacity that you added to increase the capacity of the snapshot repository
virtual disk change to assigned physical disks. The new assigned physical
disks are associated with the disk group of the snapshot repository virtual
disk.
Configuration: Premium Feature—Snapshot Virtual Disks
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