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Q111348: Stripe Set with Parity Incorrectly Displays RECOVERED

Article: Q111348
Product(s): Microsoft Windows NT
Version(s): 3.1
Operating System(s): 
Keyword(s): kbnetwork
Last Modified: 08-AUG-2001

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The information in this article applies to:

- Microsoft Windows NT Advanced Server, version 3.1 
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SYMPTOMS
========

Upon restarting Windows NT Advance Server with fault tolerance, a striped set
with parity is not recovered even though you regenerated it and received the
message "Stripe set with parity #x [RECOVERED]."

CAUSE
=====

When an NTFS fault tolerant stripe set with parity encounters discrepancies in
redundant data (eg: by removing a disk drive), you can choose the Regenerate
command from the Fault Tolerance menu even if there is not enough space (eg: a
new disk) to regenerate the redundant data. After you choose the Regenerate
command, the stripe set is shown as "Stripe set with parity #x [RECOVERED],"
even though it has is not actually been regenerated. When you restart your
computer, Disk Administrator correctly shows the strip set as [RECOVERABLE]
again.

This behavior can be reproduced with the following steps:

1. Set up a stripe set with parity.

2. Disable one drive in the set.

3. Start Disk Administrator.

4. Select the stripe set with parity; the status will be [RECOVERABLE].

5. From the Fault Tolerance menu, choose the Regenerate command.

6. Select the stripe set again, the status will be [RECOVERED].

7. Exit Disk Administrator, save changes, and restart your computer.

8. Disk Administrator shows the stripe set as [RECOVERABLE] again.

STATUS
======

Microsoft has confirmed this to be a problem in Windows NT and Windows NT
Advanced Server version 3.1. We are researching this problem and will post new
information here in the Microsoft Knowledge Base as it becomes available.

Additional query words: prodnt RAID5 UI

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Keywords          : kbnetwork 
Technology        : kbWinNTsearch kbWinNTAdvSerSearch kbWinNTAdvServ310 kbWinNT310Search
Version           : 3.1

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