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- Path: sparky!uunet!ukma!wupost!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)
- Newsgroups: comp.os.vms
- Subject: Re: ?Why does this backup go so slow?
- Date: 17 Nov 1992 18:53:47 GMT
- Organization: HST Wide Field/Planetary Camera
- Lines: 22
- Distribution: world
- Message-ID: <1ebf3rINNm1l@gap.caltech.edu>
- References: <1992Nov12.124928.1@woods.ulowell.edu>,<1992Nov17.083227.1@ptavv.llnl.gov>
- Reply-To: carl@SOL1.GPS.CALTECH.EDU
- NNTP-Posting-Host: sol1.gps.caltech.edu
-
- In article <1992Nov17.083227.1@ptavv.llnl.gov>, oberman@ptavv.llnl.gov writes:
- >In article <1992Nov12.124928.1@woods.ulowell.edu>, welchb@woods.ulowell.edu writes:
- >> It took us 4.5 hours to do an image backup of an RA90 (80% full of user
- >> data) onto an RA92? Why does it not go faster? [I had prepared a much
- >> longer version of the question, with so many particulars, that my boss
- >> said to just ask the simple question.]
-
- >BACKUP is more seriously effected by system tuning and user quotas than any
- >application I have seen.
-
- Why has nobody mentioned that BACKUP is also very seriously affected by badly
- fragmented disks? It's been my experience that a badly fragmented disk can
- take nearly twice as long to back up one that's just been restored from a
- BACKUP tape.
- --------------------------------------------------------------------------------
- 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.
-