Dell PowerVault MD3000 - Manual (Page 62)

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Disk Groups and Virtual Disks
Administrative Tools and select the Disk Management MMC option to format
and partition the disk. If the host server is running Windows Server 2008 Core
version, partition and format the virtual disk using the Microsoft DiskPart
utility.
Disk Group and Virtual Disk Expansion
Adding free capacity to a disk group is achieved by adding unconfigured
capacity on the array to the disk group. Data is accessible on disk groups,
virtual disks, and physical disks throughout the entire modification operation.
The additional free capacity can then be used to perform a virtual disk
expansion on a standard or snapshot repository virtual disk.
Disk Group Expansion
To add free capacity to a disk group, use the following procedure:
1 Click the Modify tab, then click Add Free Capacity (Physical Disks).
2 On the Add Free Capacity page, click the disk group you want to expand.
3 Click Next beneath the list of disk groups.
The Storage Manager displays information on the disk group you selected.
4 In the Add capacity to volume group drop-down menu, choose the
amount of unconfigured capacity to add to the disk group.
5 Click Finish to start the process of adding capacity to the disk group.
You can also use the Command Line Interface (CLI) on both Windows and
Linux hosts to add free capacity to a disk group. See the CLI Guide for more
information.
Once 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 MD
Storage Manager. All other virtual disk types are expandable only from the CLI.