138 Configuration: Disk Groups and Virtual Disks5 Click Add.A message prompts you to confirm your selection.6 To add the capacity to the disk group, click Yes.You can also use the Command Line Interface (CLI) on both Windows andLinux hosts to add free capacity to a disk group. See the CLI Guide for moreinformation.After the capacity expansion is completed, additional free capacity is availablein the disk group for creation of new virtual disks or expansion of existingvirtual disks.Virtual Disk ExpansionVirtual disk expansion is a dynamic modification operation that increases thecapacity of standard virtual disks.NOTE: Snapshot repository virtual disks can be expanded from the CLI or fromMDSM. All other virtual disk types are expandable only from the CLI.If you receive a warning that the snapshot repository virtual disk is becomingfull, you may expand the snapshot repository virtual disk from MDSM. See"Snapshot Repository Capacity" on page 156 for step-by-step instructions.Using Free CapacityYou can increase the capacity of a virtual disk using the free capacity on thedisk group of the standard virtual disk or the snapshot repository virtual disk.The Free Capacity node, shown in the Logical pane, is a contiguous region ofunassigned capacity on a defined disk group. When increasing virtual diskcapacity, some or all of the free capacity might be used to achieve the requiredfinal capacity. Data on the selected virtual disk remains accessible while theprocess for increasing virtual disk capacity is in progress.Using Unconfigured CapacityYou can increase the capacity of a standard virtual disk or a snapshotrepository virtual disk using the unconfigured capacity when no free capacityexists on a disk group. An increase is achieved by adding unconfiguredcapacity, in the form of unassigned physical disks, to the disk group of thestandard virtual disk or the snapshot repository virtual disk. See "Disk GroupExpansion" on page 137.
