Changes

Within the Disk Management tool right click on the unallocated space in the graphical view of the first disk to be used in the mirror set and select ''New Mirrored Volume...'' to invoke the ''New Mirrored Volume'' wizard. Click ''Next'' on the welcome screen to proceed to the disk selection screen. As mentioned previously, a mirrored set must be comprised of two disk drives. Initially, the wizard only lists the currently selected disk in the ''Selected'' column. In order to proceed, one more disk is required. To add a disk to the mirrored set, select a suitable disk from the available disks in the left hand column and click on ''Add'' to add it to the selected disks list:

[[Image:windows_server_2008_mirrored_volume_disk_selection.jpg|Selecting disks for a Windows Server 2008 Mirrored (RAID 1) volume]]

== Adding a Mirror to an Existing Volume ==

A mirror may be added to an existing volume using either the Disk Management snap-in, or from the command-prompt using the '''diskpart''' tool. When a mirror is added to an existing volume Windows creates a second volume equal in size and file system type on a second disk of your choice and copies (a process also known as ''resynching'') the data on the existing volume to the mirror.