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

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

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.

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.

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

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.