We started noticing a problem with our Windows 7 clients accessing files stored on a 2008 R2 server. Specifically we saw that the network directory was not displaying updated content on some of the clients. Further research suggests that adding the following keys resolves the problem. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters FileInfoCacheLifetime FileNotFoundCacheLifetime DirectoryCacheLifetime My question is what effect will setting the value of these keys to 1 have on our network. I know by default SMB2 caching is suppose to poll every 10 seconds. So by dropping this down to 1 second are we going to notice a significant amount of additional bandwidth? I dont want to roll out this change and have our network or file server overwhelmed. I appreciate any information anyone has regarding this change.

Anyone? Anyone know the effects? Bueller? Bueller?

Hi, Here is an article can be referred to. SMB2 Client Redirector Caches Explained http://technet.microsoft.com/en-us/library/ff686200(v=ws.10).aspxIvan-Liu TechNet Community Support

I appreciate your response. However I have seen this article. My question is, what will the effects be to my file server and network by changing this registry value. By disabling\reducing caching is my file server going to be inundated with requests. Is there a performance hit for modifying this registry key? Thank you, Kevin

SMB2 registry settings http://qa.social.msdn.microsoft.com/Forums/en-IE/os_fileservices/thread/832d395b-6e6f-4658-8dbb-120138a4cd7cIvan-Liu TechNet Community Support

SMB2 registry settings http://qa.social.msdn.microsoft.com/Forums/en-IE/os_fileservices/thread/832d395b-6e6f-4658-8dbb-120138a4cd7cIvan-Liu TechNet Community Support