Windows 2008 x64 MediaAgent is Out of Physical Memory and is Unresponsive

On Windows 2008 x64 MediaAgent computers, excessive growth of the Windows System File Cache might result in slower or unresponsive backup jobs. To avoid this issue, you can use the Microsoft Windows Dynamic Cache Service to manage the working set size of the Windows System File Cache. The recommended cache size is 20% of the maximum RAM capacity. See

Perform the following tasks in the MediaAgent computer to set the cache file growth:

1. Download the Microsoft Windows Dynamic Cache Service from the Microsoft Download Center at http://www.microsoft.com/downloads.
2. From the unpacked archive, copy the DynCache.exe file to %SystemRoot%\System32.
3. In the DynCache.reg file (also included in the archive), remove all the parameters except MaxSystemCacheMBytes.
4. Modify the parameter MaxSystemCacheMBytes to dword:00000014, which is 20% of the maximum RAM capacity. The setting in the file must be "MaxSystemCacheMBytes"=dword:00000014.
5. Import the DynCache.reg registry file into your local registry.
6. Run the following command from the command prompt:

   sc create DynCache binpath= %SystemRoot%\System32\DynCache.exe start= auto type= own DisplayName= "Dynamic Cache Service"