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Low space on server!

Created: 21 Feb 2008 • Updated: 02 Mar 2009
I currently have 10.2 installed on my anti-virus server and just finished the migration to 11.0. The 10.2 is taking up 1 GB of space on our anti-virus server, 11.0 is taking up 1.2 GB. My question: Is it safe to remove 10.2 from the server? Will it cause any trouble with 11.0?