Event ID 55 - disk is corrupt and unusable

[Guy Fillatre_1]

Hello,

I am running a VA7100 with dual controllers with 512MB cache. These controllers are connected to a Brocade 16 port. I have 4 Windows 2000 Servers connected to the Brocade.

On my servers at different times I am getting an Event 55 - The file system structure on the disk is corrupt and unusable. Please run the chkdsk utility on the volume .

I have done the chkdsk on some of my servers, and lost data & securities.

Please Help Me.

Thanks in advance.

[Keith C. Patterson]

Here are a number of possibilities to your problem:

1. HDD is bad
2. If HDD is good, then the motherboard is bad
3. If the motherboard is good, then look in line 1 :)
Anyway, backup your critical data immediately. Then run chkdsk /f. To be on the safe side, it's better if you have Win2k machine around and you might check NT disk on this machine more safely.

4. Under stressful disk input/output (I/O) on a volume that uses the NTFS file system, disk inconsistency may occur. A fix is available from Microsoft for both Windows 2000 and Windows NT.

5. As per MS Q320866, this problem may be caused by a condition in the Windows 2000 Disk Defragmenter tool that may prevent a particular cluster of data from being optimized. See the article for details.

6. This behavior can occur if the NTFS volumes' Master File Table (MFT) is corrupted. See Q246026.