jase Posted February 5, 2002 Report Share Posted February 5, 2002 I have been backing up different types of data from zip files dwg. to jpegs. and txt , doc, ppt and so on . My question is.. that on all of my backupa wether it's to a file or a dat drive the compression seem to be around 24 to 37% is that normal? I had about 31gigs of data and backed up to a file on a local drive (not over the network) and it compressed to about 24.2 gigs with 24% compression.. I deleted all the zip files ( about 10gigs worth) and tried it again and out of 20.8 gig worth of data it compressed to about 13 gigs with 37% compression. The main reason I ask all this is because on a my dds4 dat drive I am using a 20 gig tape that compresses to 40gig or something like that and when I back up to it with the 31gigs of data it kicks out the tape at about 23 to 24 gig, then asks for another tape. Does all this seem norm? Thanks Jase Quote Link to comment Share on other sites More sharing options...
darrick Posted February 5, 2002 Report Share Posted February 5, 2002 20G to 40G would be 100% compresion. I think you could get that with text files, documents and bloated DLLs. I normally see about 33% overall on a mixed file backup with compressed files mixed in. Quote Link to comment Share on other sites More sharing options...
Mayoff Posted February 5, 2002 Report Share Posted February 5, 2002 Most users get about 30% compression on a hard disk of mixed data. Quote Link to comment Share on other sites More sharing options...
KingMongo Posted February 6, 2002 Report Share Posted February 6, 2002 Yah, you won't get any compression on image files, or most media files, for that matter. Quote Link to comment Share on other sites More sharing options...
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