[unisog] Tape backup solutions
foster at dim.ucsd.edu
Mon Jun 17 17:07:47 GMT 2002
Your prices may be close, but I think your shelf life
numbers are way off. Which do you think has a longer
MTBF, a disk spinning at 7200RPM or a tape sitting on a
shelf? And BTW, the MTBF for an AIT tape is 400,000 hours
(100% duty cycle).
Also, a mirror does not provide stateful backup, which is
critical in many/most environments. It's great if you want
to recover something you deleted, but not so great if you
corrupted some data files and need to get last week's version.
> I think hard drives are cheap enough so you could just use NAS to mirror
> your stuff. HDs are beginning to get competitive with tapes:
> Tapes $75/40GB slow, ~1 year shelf life
> HD $100/40GB fast, ~3 year shelf life
> --Patrick Darden Internetworking Manager
> -- 706.475.3312 darden at armc.org
> -- Athens Regional Medical Center
> On Tue, 11 Jun 2002, William Diehl III wrote:
> > Greetings;
> > We are considering replacing our current tape backup system with new
> > We are looking at AIT-2 and a Sony LIB-152/A2 which we can get for about
$5100 (15 slot, 1 drive).
> > Tapes seem to be about $75 each.
> > This system will be used to backup a samba file server, webmail server,
oracle database server, etc with all systems running either Linux or Solaris.
> > Does anyone have a comment on AIT-2? Should we spend the extra money and go
with AIT-3? Or wait for IBM/Sony to release there new terabyte capacity tapes
(This month's PC Magazine)?
> > Of course funds are low...
> > Any insight would be appreciated. We feel AIT-2 will more than suffice to
meet our needs now as far as capacity is concerned. But with decreasing storage
costs... the future is unclear.
> > William Diehl
> > Network Administrator
> > La Sierra University
<< All opinions expressed are mine, not the University's >>
David Foster National Center for Microscopy and Imaging Research
Programmer/Analyst University of California, San Diego
dfoster at ucsd.edu Department of Neuroscience, Mail 0608
(858) 534-7968 http://ncmir.ucsd.edu/
"The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore, all progress
depends on the unreasonable." -- George Bernard Shaw
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