Your cloud gaming rig is divided into two drives, the c drive and D drive, and whereas the c drive is solely for running your cloud server's Windows, the D drive is where you will store your games and Steam installation.

The D drive offers a total of 60 gigabytes of harddisk space, running on a high performance physically connected SSD drive, and you will be able to install any game which fits within those 60 GB (which almost all games do).

When you launch your cloud rig the server has to download your games from the backup data stored securely in the cloud, resulting in a startup time which depends on how much space your installed games take on the D drive.

Also note that the documents folder and the AppData/LocalLow/ folder on your c drive is backed up automatically as well, since this is where most games store certain offline gamedata and savegames, enabling you to not solely rely on cloud based savegames if you would rather use an offline solution.

To speed up the startup time, or to make more space available for a new game you want to install, simply uninstall games you aren't currently using or playing, just don't forget to make sure that savegames you want to keep are backed up1.

Moreover, reinstalling games will not be as tedious as usual, as downloading large games are done in a matter of minutes.

  1. Most modern games utilise Steam's cloud based savegames, meaning your savegames will automatically be synchronised in your account and you won't have to worry about backing them up. However, for other games that use the documents folder on the c drive Snoost backs up these along with your other gamedata, and these savegames are therefore stored until you manually delete them. 

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