Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxl!houxm!houxz!vax135!cornell!uw-beaver!tektronix!hplabs!sri-unix!speck@cit-vax.ARPA From: speck@cit-vax.ARPA Newsgroups: net.unix-wizards Subject: Re: (dump) Hanoi algorithm Message-ID: <12600@sri-arpa.UUCP> Date: Sun, 19-Aug-84 14:10:32 EDT Article-I.D.: sri-arpa.12600 Posted: Sun Aug 19 14:10:32 1984 Date-Received: Wed, 22-Aug-84 01:03:03 EDT Lines: 14 From: Don SpeckThe reason for keeping two week's worth of daily dump tapes is that your weekly dump tapes can go bad just when you need them most, forcing you to substitute the previous week's weekly and daily backups for this week's ruined weekly tape. If you don't have daily backups from the previous week, then you'll lose a week's worth of files if your weekly tape dies at an inopportune time. I submit that this is quite likely to happen, since a tape may write fine but accumulate errors that aren't noticed until you try to read the tape (i.e, when you NEED to read it). At least that's what I found yesterday: 20 separate read errors on one tape. Fortunately the files I was looking for were elsewhere. Don