home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!tsw!ray
- From: ray@tsw.UUCP (Ray Izumi)
- Newsgroups: comp.unix.aix
- Subject: Re: Questions about backup on 0.25" streaming tape
- Message-ID: <611@tsw.UUCP>
- Date: 9 Nov 92 18:10:12 GMT
- References: <92303.222821CXT6@psuvm.psu.edu>
- Organization: The System Works, Redmond, WA
- Lines: 23
-
- In article <92303.222821CXT6@psuvm.psu.edu> CXT6@psuvm.psu.edu writes:
- >A few days ago, I backed-up 2 directories by creating 2 backups on a
- >single tape usingthe following commands
- >
- >find /home/aaa -print | backup -ivf /dev/rmt0.1
- >find /home/bbb -print | backup -ivf /dev/rmt0.1
- >tctl -f /dev/rmt0.1 rewind
- >
- >I found I used only 1% of that 0.25" streaming tape!
- >
- I'm not sure about your other problem, but I think the reason you're only
- using 1% of the tape is that backup defaults to an INCREMENTAL backup,
- using some arcane formula for deciding what to put on tape. So you may not
- have the backup you thought you did. Check it out. I decided to use good'ol
- tar for our backups here, since there are several features of backup that
- I don't like.
-
-
- --
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- Ray Izumi, The System Works, Redmond, WA 206-823-4685 uunet!tsw!ray
- "Put the pillow over your head, scream and cry - the garbage is coming!"
- - New York City Commissioner of Sanitation
-