home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.os.vms
- Path: sparky!uunet!cs.utexas.edu!sdd.hp.com!elroy.jpl.nasa.gov!nntp-server.caltech.edu!SOL1.GPS.CALTECH.EDU!CARL
- From: carl@SOL1.GPS.CALTECH.EDU (Carl J Lydick)
- Subject: Re: Multiple save-sets on a tape
- Message-ID: <1992Jul24.082810.8133@cco.caltech.edu>
- Sender: news@cco.caltech.edu
- Nntp-Posting-Host: sol1.gps.caltech.edu
- Reply-To: carl@SOL1.GPS.CALTECH.EDU
- Organization: HST Wide Field/Planetary Camera
- References: <Bqo4q4.Hy6@news.cso.uiuc.edu> <1992JUL20.175952.03@pegasus.ch>,<1992Jul24.114130.1@vcp1.vcp.monash.edu.au>
- Date: Fri, 24 Jul 1992 08:28:10 GMT
- Lines: 33
-
- In article <1992Jul24.114130.1@vcp1.vcp.monash.edu.au>, pb@vcp1.vcp.monash.edu.au (Peter Bury) writes:
- >In article <1992JUL20.175952.03@pegasus.ch>, imkesun@pegasus.ch (Ralph Kloess) writes:
- >In msg <Bqo4q4.Hy6@news.cso.uiuc.edu>, MULLEN@scorpion.ag.uiuc.edu (Evil Twin) writes:
- >>
- >> Hi there;
- >>
- >> I want to put multiple backup save-sets on a single 8mm Exabyte tape. I've
- >> tried a couple of methods that flew like the proverbial lead balloon -
- >
- >
- >Replies so far to this topic have shown how to put multiple save-sets onto
- >8mm tapes, but all have assumed that the write operations have occurred
- >without dismounting the tape. When running an archive operation, one wants
- >to be able to append to a tape. This is possible by using backup/lis to get
- >to the end of the tape, but be warned that an error condition is reported
- >if no savesets exist. ie:
-
- Nonsense. The technique I suggest allows you to append to the tape. You
- simply have to use BACKUP/NOREWIND/IGNORE=LABEL. This causes BACKUP to skip to
- the logical end of tape before writing. Some 8mm tapes and SCSI controllers
- have a problem under VMS v5.4-2 where BACKUP won't initialize the tape
- properly, so what I do is to explicitly initialize the tape the first time I
- use it, and use BACKUP/NOREWIND for ALL BACKUP operations. So instead of the
- BACKUP/LIST you recommend, save yourself some time (and, if you're doing this
- in batch mode, some disk space) and simply use BACKUP/NOREWIND.
- --------------------------------------------------------------------------------
- Carl J Lydick | INTERnet: CARL@SOL1.GPS.CALTECH.EDU | NSI/HEPnet: SOL1::CARL
-
- Disclaimer: Hey, I understand VAXen and VMS. That's what I get paid for. My
- understanding of astronomy is purely at the amateur level (or below). So
- unless what I'm saying is directly related to VAX/VMS, don't hold me or my
- organization responsible for it. If it IS related to VAX/VMS, you can try to
- hold me responsible for it, but my organization had nothing to do with it.
-