Microsoft KB Archive/325761

= Disk Management Does Not Show Migrated FT Set Membership Correctly =

Article ID: 325761

Article Last Modified on 10/30/2006

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APPLIES TO


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

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This article was previously published under Q325761



SYMPTOMS
When you upgrade a Microsoft Windows NT-based computer that contains fault tolerant (FT) hard disk sets (mirror set, stripe set, stripe set with parity, or volume set) to Windows 2000, or when you move hard disks that contain FT sets from Windows NT to Windows 2000, Windows 2000 Disk Management may show the FT sets to be separate volumes and not part of the original FT sets.



CAUSE
This problem is caused by the Graphical User Interface (GUI), because it does not show the hard disk FT sets correctly. The Content Management GUI may represent members of the FT set as standalone logical drives, however, they are in fact still part of the FT set.



RESOLUTION
To resolve this problem, upgrade the disks to Dynamic.

Before you upgrade a basic disk to a dynamic disk, note the following:
 * You must have at least 1 MB of unallocated disk space available on the basic disk that you want to upgrade.
 * When you upgrade to a dynamic disk, the existing partitions on the basic disk are converted to simple volumes on the dynamic disk. Additionally, any existing mirrored volumes, striped volumes, RAID-5 volumes, or spanned volumes are converted to the dynamic volume equivalent.
 * After you upgrade to a dynamic disk, the dynamic volumes cannot be changed back to partitions. You must first delete all dynamic volumes on the disk, and then convert the dynamic disk back to a basic disk.
 * After you upgrade to a dynamic disk, local access to the dynamic disk is limited to the Windows 2000 operating system.
 * Upgrade a basic disk to dynamic disk is not supported on laptop computers.

To upgrade a basic disk to a dynamic disk, follow these steps:
 * 1) In Disk Management, in the lower right pane that shows the graphical representations of the disks in your computer, right-click the disk number that you want to upgrade to dynamic(for example, Disk 0), and then click Upgrade to Dynamic Disk.
 * 2) In the Upgrade to Dynamic Disk dialog box, click to select the disk that you want to upgrade, and then click OK.
 * 3) In the Disks to Upgrade dialog box, click Details if you want to view the list of volumes in the disk.
 * 4) Click Upgrade, click Yes, and then click OK.



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 additional information about moving Windows NT disk sets, click the following article number to view the article in the Microsoft Knowledge Base:

253110 Moving Windows NT Basic Disk FT Sets to a Windows 2000 Computer

For additional information about why you cannot upgrade a disk from basic to dynamic on a laptop, click the following article number to view the article in the Microsoft Knowledge Base:

232463 Option to Upgrade Basic Disk to Dynamic on Laptop Not Available

Additional query words: Disk Management, fault tolerance, mirror set, stripe set, stripe set with parity, volume set, legacy

Keywords: kbbug KB325761

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