Fat Client : Lack of space [JDE 9.1]

Good morning guys!

So I'm not CNC, but I just got appointed a task that has not been done for a while here : install package on the dev clients (FAT).

There are more then 50 packages to install each.

No big deal, I started them during the night.

I come back : Install crashed, lack fo space on the hard drive.

Those FAT client are VM with only 100 go of space.

I deleted the backup folder, but still it's too big.

Each env has a package file and a space file with 4-5 go of used space each.

Is there a way to clean it up?

Thank you!