Note:
A Workaround section has been added at the end of the document which can be used instead of the hotfix


To which versions of Symantec Enterprise Vault can this hotfix be applied?

This hotfix can only be applied to the following versions of Enterprise Vault:

1.  EV FSA modifies the last access time of the files being archived to the time at which the archiving was run.

This will affect the conversion of archived files to placeholders if:

2.  EV uses SetFileTime API to reset last access time with opening file handle with FILE_WRITE_ATTRIBUTES, but in some cases on NTFS the time does not reset even though the API returns success.

This is due to oplocks not being released properly.

3. The hotfix uses FILE_GENERIC_WRITE to open file handles for resetting last access time

How to install this hotfix?
As best practices, make sure to have a backup of the system before making any changes.

1. Stop Enterprise Vault Services on all EV Servers.

2. On all EV Servers, take a copy of the EVFileServerArchiveWrapper.dll file that currently exist in the EV installation directory.

3. Copy the file from the hotfix to EV installation folder on each EV Server: EVFileServerArchiveWrapper.dll

4. Restart all services on all EV Servers

1. Stop all Enterprise Vault services

2. Copy the original modules back to the Enterprise Vault installation directory and over write the existing files.

3. Start the Enterprise Vault services.

Workaround
A workaround is available from Microsoft to fix this issue without the need of installing the hotfix.
This involves setting the 'CachedOpenLimit' registry key to 0 on each file server.

Warning: Incorrect use of the Windows registry editor may prevent the operating system from functioning properly. Great care should be taken when making changes to a Windows registry. Registry modifications should only be carried-out by persons experienced in the use of the registry editor application.

  1. In Registry Editor, locate the following registry subkey:
     HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Lanmanserver\Parameters
  2. Under the Parameters registry subkey, click Edit, click New, click DWORD Value, type CachedOpenLimit, and then press ENTER.
  3. Set the decimal value of the Cachedopenlimit registry entry to 0.
  4. Restart the Server service.


When you set the value to 0 , file handles of all the shared files are not cached by the system. This can cause a performance issue when you are accessing shared files in the system.