Mark Russinovich at www.sysinternals.com has released freeware utility CacheSet that allows you to manipulate the working-set parameters of the system file cache. Useful to Windows NT admin.

CacheSet runs on all versions of NT and will work without modifications on new Service Pack releases. In addition to providing you the ability to control the minimum and maximum working set sizes, it also allows you to reset the Cache's working set, forcing it to grow as necessary from a minimal starting point. Also unlike CacheMan, changes made with CacheSet have an immediate effect on the size of the Cache. Full source code is included.

New Riders has good NT texts.