Frank,
Tom,

I was thinking the same thing, though where possible I have a
couple of extra anyway (2 x runs/cycle + N) for small values
of N.

Tom, whatever I said, ignore it, you are in reasonable good shape,
you have fallback.

> --On Thursday, October 16, 2003 16:25:48 +0100 Tom Brown <tom.brown AT 
> goodtechnology DOT com> wrote:
> 
> >> > tapecycle 20 tapes:
> >> > number of tapes to use per dumpcycle of 2 weeks. 10 tapes X 2 dumpcycles
> > =
> >> > 20 tapes.
> >> 
> >> Yes, but you really should have an extra tape or two in there to lessen
> >> the chance of a failed backup overwriting your last full backup.  You
> >> should really consider doubling that number so you always have two copies
> >> in case one should error on a restore (in which case you would lose your
> >> newest data but you could at least still recover older files.).
> > 
> > really? in my case i allways have tapecycle as dumpcycle*runspercycle
> > 
> > is that bad?
> 
> Sorry, it was too early in the morning for me to comprehend.  I somehow
> got the idea that  his tapecycle = runspercycle, completely missing the
> fact he had double the runspercycle.
> 
> Having extra tapes never hurts, though.
> 
> Frank
> > 
> > e.g ...
> > 
> > dumpcycle 1 weeks       # the number of days in the normal dump cycle
> > runspercycle 5          # the number of amdump runs in dumpcycle days
> >                         # (4 weeks * 5 amdump runs per week -- just
> > weekdays)
> > tapecycle 5 tapes      # the number of tapes in rotation
> > 
> > or another config....
> > 
> > dumpcycle 2 weeks       # the number of days in the normal dump cycle
> > runspercycle 10         # the number of amdump runs in dumpcycle days
> >                         # (4 weeks * 5 amdump runs per week -- just
> > weekdays)
> > tapecycle 10 tapes      # the number of tapes in rotation
> > 
> 
> 
> 
> -- 
> Frank Smith                                      fsmith AT hoovers DOT com
> Systems Administrator                           Voice: 512-374-4673
> Hoover's Online                                   Fax: 512-374-4501
>