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- From: olson@anchor.esd.sgi.com (Dave Olson)
- Newsgroups: comp.sys.sgi
- Subject: Re: Tape Drive Question
- Message-ID: <po39pko@zuni.esd.sgi.com>
- Date: 12 Sep 92 02:20:35 GMT
- References: <22345@galaxy.ucr.edu>
- Sender: news@zuni.esd.sgi.com (Net News)
- Distribution: usa
- Organization: Silicon Graphics, Inc. Mountain View, CA
- Lines: 33
-
- In <22345@galaxy.ucr.edu> starbuck@ucrmath.ucr.edu (starbuck) writes:
-
- | Our Machine is a SGI 320VGX running Irix v 4.0.1 with a 150 megabyte internal
- | tape drive.
- |
- | On our VAX regardless of the tape drive ( be it reel or cassette ) I can do
- | the following.
- |
- | Create a archive ( vax save_set ). This archive can be of any size. I may
- | put different archives ( vax save_sets ) on a tape. Archives ( vax save_sets )
- | may span multiple tapes.
- |
- | When I wish to extract data I need only start on the tape that the data is
- | on. Not like tar where I have to go though n tapes to get at the data. Also
-
- You can start with any tape, just use the 'e' option so tar reads until
- it finds the start of the next file (since a file may be split across
- tapes).
-
- | on the VMS BACKUP untility one can append archives ( vax save_sets ) to
- | the end of a tape. This saves money. At this time I have unload partial a
- | tape and reload with the new data just to get some value out of the tapes.
-
- Of course you can put multiple archives on a single tape. You can only
- make it a single archive (save set) on tapes that support overwriting
- with the standard tape programs though (9 track, and DAT, currently).
- To put multiple archives on a single tape, just do 'mt feom' first to
- get to the end of the recorded data.
-
- --
- Let no one tell me that silence gives consent, | Dave Olson
- because whoever is silent dissents. | Silicon Graphics, Inc.
- Maria Isabel Barreno | olson@sgi.com
-