Re: Amanda Compression
2004-09-24 13:58:07
On Friday 24 September 2004 09:26, Ivan Petrovich wrote:
>Jon,
>
>> Hypothetical -- I just checked, my root FS has 100,000 files.
>> My level 0 of the / DLE thus is 100000 files. Guessing that
>> on any one day, maybe 1000 change and appear in incremental
>> backups. If I do a level 0, then three incrementals,
>> WITHOUT the level 0 I only have a 3 in 100 chance the file
>> I need might be in the incrementals. When you come around on
>> your tapecycle, you will be overwriting that level 0. The
>> more level 0's you have, the better chance that the file(s)
>> you need will be on a tape somewhere.
>
>But if (tapecycle >= runspercycle + 1) then you would not ever
>overwrite any level 0. Right?
>
>Ivan
I believe thats true. However, its a bit like having all your eggs in
one basket, so most of keep at least 2*runspercycle tapes. That way
if the first backups no good, you can back up a day at a time until a
good one has been found. Tapes for some drives (DDSn) are cheap,
while some of the others definitely come in the "Oh my gawd"
territory. The latter will make you manage the tape stock for
minimum cost. Which is why I just spent a hair over 200 for a 200GB
disk drive and made virtual tapes out of it.
--
Cheers, Gene
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
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Yahoo.com attorneys please note, additions to this message
by Gene Heskett are:
Copyright 2004 by Maurice Eugene Heskett, all rights reserved.
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- Re: Amanda Compression, (continued)
- Re: Amanda Compression, Ivan Petrovich
- Re: Amanda Compression, Paul Bijnens
- Re: Amanda Compression, Gene Heskett
- Re: Amanda Compression, Ivan Petrovich
- Re: Amanda Compression, Jon LaBadie
- Re: Amanda Compression, Ivan Petrovich
- Re: Amanda Compression, Jon LaBadie
- Re: Amanda Compression, Ivan Petrovich
- Re: Amanda Compression, Jon LaBadie
- Re: Amanda Compression, Ivan Petrovich
- Re: Amanda Compression,
Gene Heskett <=
- Re: Amanda Compression, Gene Heskett
- Re: Amanda Compression, Ivan Petrovich
- Re: Amanda Compression, Geert Uytterhoeven
- Re: Amanda Compression, Jon LaBadie
- Re: Amanda Compression, Gene Heskett
- Re: Amanda Compression, Jon LaBadie
- Re: Amanda Compression, Eric Siegerman
- Re: Amanda Compression, Ivan Petrovich
- Re: Amanda Compression, Gene Heskett
Re: Amanda Compression, Gene Heskett
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