Dell PowerVault MD3220 - Manual (Page 132)

132 Configuration: Disk Groups and Virtual Disks
NOTE: If the RAID level of the disk group is RAID level 5, or RAID level 6, and
the expansion enclosure has enclosure loss protection, Display only physical
disks that ensures enclosure loss protection is displayed and is selected by
default.
4 in the Available physical disks area, select physical disks up to the allowed
maximum number of physical disks.
NOTE: You cannot mix different media types or different interface types
within a single disk group or virtual disk.
5 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 and
Linux hosts to add free capacity to a disk group.
After the capacity expansion is completed, additional free capacity is available
in the disk group for creation of new virtual disks or expansion of existing
virtual disks.
Virtual Disk Expansion
Virtual disk expansion is a dynamic modification operation that increases the
capacity of standard virtual disks.
NOTE: Snapshot repository virtual disks can be expanded from the CLI or from
MDSM. All other virtual disk types are expandable only from the CLI.
If you receive a warning that the snapshot repository virtual disk is becoming
full, you may expand the snapshot repository virtual disk from MDSM. See
"Snapshot Repository Capacity" on page 152 for step-by-step instructions.
Using Free Capacity
You can increase the capacity of a virtual disk using the free capacity on the
disk 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 of
unassigned capacity on a defined disk group. When increasing virtual disk
capacity, some or all of the free capacity may be used to achieve the required
final capacity. Data on the selected virtual disk remains accessible while the
process for increasing virtual disk capacity is in progress.
book.book Page 132 Tuesday, June 18, 2013 2:53 PM