Open Computer Management (Local).
In the console tree, click Disk Management.
Where?
Computer Management (Local)
Storage
Disk Management
Right-click the unallocated space on one of the dynamic disks on which you want to create the mirrored volume, and then click New Volume.
In the New Volume Wizard, click Next, click Mirrored, and then follow the instructions on your screen.
Notes
To open Computer Management, click Start, and then click Control Panel. Double-click Administrative Tools, and then double-click Computer Management.
You must be logged on as an administrator or a member of the Administrators group in order to complete this procedure. If your computer is connected to a network, network policy settings may also prevent you from completing this procedure.
You can create mirrored volumes only on computers running Windows 2000 Server, Windows 2000 Advanced Server, or Windows 2000 Datacenter Server.
You need two dynamic disks to create a mirrored volume.
You can mirror an existing simple volume.
Mirrored volumes are fault tolerant and use RAID-1, which provides redundancy by creating two identical copies of a volume.
Mirrored volumes cannot be extended or striped.
Both copies (mirrors) of the mirrored volume share the same drive letter.