This article was previously published under Q265006
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Remote Storage oplocks "opportunistic file locking" failures may cause a reduction in system performance and issues with file system filters.
Remote Storage maintains a list of pre-migrated files in a File System Agent (FSA) database, which is located in the %SystemRoot%\System32\FsaDb folder. A pre-migrated file is one that has been copied to offline storage but is not yet truncated (data still resides locally on the volume). Because the volume free space is still above the appropriate level, files are only truncated when the actual volume free space falls below the specified minimum value.
An oplock failure can occur if you open or modify one of these pre-migrated files before it is truncated.
To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack
Microsoft has confirmed that this is a problem in Microsoft Windows 2000. This problem was first corrected in Windows 2000 Service Pack 1.
For help with system performance issues in Windows Vista, visit the following Microsoft web page: