On Tue, Apr 08, 2003 at 02:55:04PM +0200, Toralf Lund wrote:
> A question a bit on the side:
> 
> I've been looking for a new drive or autoloader, and I notice that some 
> vendors now assume a hardware compression ratio of 2.6:1 in their 
> advertising material. Which leads me to the question in the subject; has 
> anyone ever compressed real data that much? Or even achieved a ratio of 
> 2:1, which is also frequently assumed? (In conjunction with backups, that 
> is.) The best I've done with Amanda is about 1.8:1, but that's for 
> software compression, of course.
> -- 
> - Toralf


Not me.  Might be achievable on very large not-yet-compressed data, but the 
backups I've been doing have so many JPG's and compressed TIF's that can't be 
further compressed (easily at least) that I get nowhere near 2:1.  1.5 maybe.

Kevin