Dump level reversal
2006-07-27 14:44:10
The discussion of dump levels has me considering changing
my setup. The goal would be to have backups covering a
longer period than 1 month, say 2 months. But using the
same vtape storage space.
Nominally if I double the number of vtapes (40 -> 80 with
reduced size) and the dumpcycle (7 days -> 14 days) that
would do it.
Typically my daily incrementals are only 10% or less than
my level 0's and my vtapes are 60-70% full.
Such an arrangement would still have me storing the same
number of dumpcycles, about 4 - 5. But they would cover
a longer period.
Tape spanning is on and runtapes is > 1 for the
occassional larger than normal amdump.
I think I would keep bumpdays at 2 to ensure I have at
least two copies of any changed file.
Anyone see a problem with that scenario?
Related to my thinking about the above change is a question
about dump levels. Aside from promotion to level 0, does
amanda ever reverse the sequence of dump levels, say going
from 4 back to 3 or 2 or 1? Or is it always changing
monotonically down.
--
Jon H. LaBadie jon AT jgcomp DOT com
JG Computing
4455 Province Line Road (609) 252-0159
Princeton, NJ 08540-4322 (609) 683-7220 (fax)
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