"When I installed 8 GB more RAM in my machine, Windows swelled the pagefile to match the 12 GB of total RAM and it took all of that from the my OS drive. To keep that drive lean, I went into the Performance Settings, which is under the Advanced tab of the computer's properties, next to the System Protection tab, and changed the settings. Like the restore points, you are able to control the amount of space allocated for the pagefile and the specific drive the pagefile is stored on. Instead of keeping it on a small SSD, it may be wise to move it over to a larger but slower HDD."



Link: OCC