Fault Tolerant Recovery Does Not Reoccur After Shut Down

• Microsoft Windows NT Server version 4.0
• Microsoft Windows NT Server version 4.0, Terminal Server Edition

SYMPTOMS

When using Windows NT disk mirroring (RAID-1) or Stripe set with parity (RAID-5), and the system is not shut down properly (for example, during a power outage) or an FT member is replaced after a failure, Ftdisk.sys recovers the fault tolerant sets by performing a resynchronization function.

If a normal shutdown of the Windows NT system begins before the completion of the resynchronization function, Ftdisk.sys does not begin a recovery again when the Windows NT system restarts.

CAUSE

Ftdisk.sys does not set a flag for a shutdown in the Windows NT registry information key in HKEY_LOCAL_MACHINE\System\DISK.

Ftdisk.sys should set a Regenerating flag in the proper DISK_PARTITION structure in the Windows NT registry before the system is shut down. The flag tells Ftdisk.sys to start the resynchronization when the system is restarted.

RESOLUTION

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, please see the following article in the Microsoft Knowledge Base:

Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack

STATUS

Microsoft has confirmed this to be a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.

Additional query words: regenerate

Keywords : NT4SP4Fix kbbug4.00 kbfix4.00.sp4 ntfilesys NTSrv
Version : WinNT:4.0
Platform : winnt
Issue type : kbbug