Yes, it's a good idea, compression means the free space between blocks of data in the virtual disk are eliminated, reducing its footprint.
But, I would like to comment this:
I think this is unfair portrayal of what happened. Stuw DID provide links to Parallels Desktop documentation regarding Snapshots on the same post:
He also asked you to post your problem ID, which you did and then on the same day you received the instructions by PM.
Last edited by a moderator: Apr 6, 2014