We have a server with windows server 2008 R2 64bit installed on it, that we use for security cameras to upload images via ftp (about 40 of them) and stores the images on a raid array. This is the only use for this server. Also once a day at 1am, when the cameras are not as active, a python script will run that will move the pictures into directories coinciding with the date of each image (IE: 30_May_12) and delete files older than 14 days. The ftp is IIS FTP 7.5 and after about a day, the physical memory maxes out in use. I used RAMMap to see what is taking up the memory and it is a metafile. Today after a days worth, this metafile is at 11gb. I have tried setting HKLM\SYSTEM\CurrentControlSet\services\InetInfo\Parameters\DisableMemoryCache = 0x00000001 (1) type REG_DWORD, rebooting the system and the cache still fills up. I have also disabled the "Allow files on this drive to have contents indexed in addition to the properties" located on the array drive properties. I have noticed that this server never release the RAM it uses for the cached files (when I run a script to sort the files). How do I get the server to release the RAM or to stop caching the files all together? I realize that with FTPing 40 cameras (probably about a million files a day), will put a monstrous load on any server, but the server is a Xeon 3.20GHz (2 processors) with 12 gigs of RAM installed. We need this fixed as soon as we can. Can anyone please help?

you can try http://social.technet.microsoft.com/wiki/contents/articles/6925.how-to-prevent-filecache-to-eat-up-all-the-ram.aspx to set max to the filecache. last time the topic came up, the cause was a virsu scanner not releasing the cache, so you might check what causes it.

I think I read where this is not recommended by microsoft for 2008 R2...... do know if that is true?

i guess what you red is about the dynamic cache service, which isnt compatible with w7/w2k8 r2 (http://blogs.technet.com/b/yongrhee/archive/2010/02/16/windows-7-and-windows-server-2008-r2-do-you-still-need-the-microsoft-windows-dynamic-cache-service.aspx). the api calls described (or the freeware tools) work on w2k8 r2.

For FTP queries, I would have ask here. http://forums.iis.net/ Thanks