This step-by-step article describes how to mirror the
system and boot partition in Windows Server 2003. This scenario is based on the
assumption that the system and boot files are located on disk 0 and that disk 1
is unallocated space.
- At least two hard-disk drives; IDE, small computer system
interface (SCSI), or mixed architecture is permissible.
- The second drive must be at least the size of the volume on
which the operating system boot and system files reside to permit
- The Windows Server 2003 system and boot files must reside
on the same volume to be mirrored.
The memory dump file is written only to the boot hard disk. Windows Server 2003 can continue to work with a mirrored system disk configuration even if one of the disks in the mirror is removed. However, the memory dump file cannot be written to the remaining system disk in the mirror. You must schedule a system restart for the memory dump file to be written to the remaining hard disk.
Set up the disk management system
- Click Start, point to Administrative Tools, and then click Computer Management to open the Computer Management console.
- Expand the Storage node.
- Click Disk Management.
- On the View menu, point to Top, and then click Disk List.
In the right pane, the attributes of each disk in the
system are displayed.
- On the View menu, point to Bottom, and then click Graphical View.
At the bottom of the right pane, a color-coded
graphical view of the disks on the system is displayed:
- Disk description panel: The disk description panel (which is gray) is located to the
left of the volume description, which is in color. The disk description
contains information about each disk's disk number, whether its configuration
is basic or dynamic, its size, and its online or offline status.
- Volume description panel: The volume description panels are color-coded. They hold
information about each volume, such as the drive letter (if assigned), whether
the volume is allocated or unallocated, the partition or volume size, and the
health status of the volume.
Upgrade to dynamic disks
RAID systems require dynamic disks in Windows Server 2003. Any
disks that you are upgrading must contain at least 1 megabyte (MB) of free
space at the end of the disk for the upgrade to succeed. Disk Management
automatically reserves this free space when it creates partitions or volumes on
a disk, but disks with partitions or volumes that are created by other
operating systems may not have this free space available.Note
You must be logged on as an administrator or a member of the
Administrators group to complete this procedure. If your computer is connected
to a network, network policy settings may also prevent you from completing this
To upgrade a basic disk to a dynamic disk, follow these
- Before you upgrade disks, quit any programs that are
running on those disks.
- Right-click the gray disk description panel, and then click
Upgrade to Dynamic Disk.
- If the second disk is not a dynamic disk, follow these
steps to upgrade it to a dynamic disk.
Mirror the boot and system volume
In this scenario, disk 1 is the disk on which the image of disk 0
will be mirrored.Note
Partitions are referred to as volumes
when the disks are dynamic.
- Disk 1 must be unallocated space before you can proceed
- Right-click disk 0 (which contains the boot and system files), and then click Add Mirror.
- A dialog box opens in which any disk on your system that is
available for mirroring is displayed. Select the disk of your choice (in this
example, it is disk 1), and then click Add Mirror.
Both disk 0 and disk 1 will now have the same color
code, the same drive letter, and the volumes will have the status note
"Regenerating" displayed while the information is being copied from the first
disk to the second disk. The system will automatically size the volume of the
new mirror to the same size as that of the original boot and system
- If you now want to boot from the new mirrored disk, you
have to change the Boot.ini ARC path that points the computer to the partition
in which the system files are located.
After you upgrade a basic disk to a dynamic disk, any existing
partitions on the basic disk become (dynamic) simple volumes. You cannot change
the dynamic volumes back to partitions.
A dynamic disk cannot
contain partitions or logical drives, nor can it be accessed by MS-DOS or by
any Windows operating systems other than Windows Server 2003.Important
Do not use a hardware RAID solution and a software RAID solution on the same disk.
For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:
Booting from mirror after primary partition is lost
Steps to recover a failed mirrored system/boot partition
Overview of disk mirroring (RAID Level 1) in Windows NT
Article ID: 323432 - Last Review: December 3, 2007 - Revision: 9.3
- Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
- Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
- Microsoft Windows Server 2003, Standard Edition (32-bit x86)
- Microsoft Windows Server 2003, Web Edition
- Microsoft Windows Small Business Server 2003 Standard Edition
- Microsoft Windows Small Business Server 2003 Premium Edition
|kbstoragemgmt kbgraphxlink kbhowto kbhowtomaster KB323432|