Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 alpha 4/15/85; site ucbvax.ARPA Path: utzoo!watmath!clyde!burl!ulysses!ucbvax!info-vax From: info-vax@ucbvax.ARPA Newsgroups: fa.info-vax Subject: compressing disk space Message-ID: <8720@ucbvax.ARPA> Date: Wed, 3-Jul-85 02:08:26 EDT Article-I.D.: ucbvax.8720 Posted: Wed Jul 3 02:08:26 1985 Date-Received: Thu, 4-Jul-85 00:16:47 EDT Sender: daemon@ucbvax.ARPA Organization: University of California at Berkeley Lines: 15 From: Ronald A. JarrellVMS has always had problems with fragmented disk packs. Most systems do, if only because it destroys your performance slowly but surely. The only real way to compress a pack under VMS is to do a BACKUP/IMAGE to your favorite media (another pack or to tape) and then reload it. If you have removable packs, you can just BACKUP/IMAGE to the other pack and start using it instead. A BACKUP/IMAGE restore reloads each file in it's entirety, because when it dumped them it dumped each completely, so your file system starts out contiguous.. We schedule fairly regular periods of compressing at least our system pack. -Ron