Microsoft KB Archive/235561

= Member of Dynamic Volume Split into 2 or More Regions on a Disk =

Article ID: 235561

Article Last Modified on 2/23/2007

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Professional Edition

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This article was previously published under Q235561



SYMPTOMS
When you create or view the layout of any of the following volume types, one of the members may be split into 2 separate regions of a disk:
 * 1) RAID-5
 * 2) Striped
 * 3) Spanned
 * 4) Mirrored volume



CAUSE
This problem can occur when you create one member of a volume and there is extra space between two other volumes on a disk. When this occurs, Logical Disk Manager (LDM) may combine that space with the rest of the unallocated space on a disk.



RESOLUTION
To resolve this problem:
 * 1) Fully back up the volume, and then remove it.
 * 2) Re-create the volume on disks that only have contiguous regions of unallocated space.
 * 3) Restore the data to the new volume.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.



MORE INFORMATION
For example, this problem can occur when you want to create a RAID-5 volume on disks 0, 1 and 2. Disks 0 and 1 have 2GB of contiguous unallocated space, but disk 2 has 2GB of non-contiguous unallocated space available. Disk 2 has 1GB between two simple volumes, left over from a volume that was previously removed and 1GB at the end of the disk. After you create the RAID-5 volume on disks 0, 1 and 2, the member of the volume on disk 2 is split between the middle and the end of the disk.

Additional query words: ldm veritas

Keywords: kbprb kbui KB235561

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