Hi,
I just wanted to show you the relevant aging part of by backuppc
config.pl
file to check with you if my calculations are correct.
The relevant part of my config looks like this:
$Conf{FullPeriod} = 13.97;
$Conf{IncrPeriod} = 0.97;
$Conf{FullKeepCnt} = [4, 3, 2, 2, 2, 0, 1, 1, 1];
# | | | | | | | | |
# | | | | | | | | \- 1 backup at 512 weeks
interval (256 x FullPeriod)
# | | | | | | | \---- 1 backup at 256 weeks
interval (128 x FullPeriod)
# | | | | | | \------- 1 backup at 128 weeks
interval ( 64 x FullPeriod)
# | | | | | \---------- 0 backup at 64 weeks
interval ( 32 x FullPeriod)
# | | | | \------------- 2 backup at 32 weeks
interval ( 16 x FullPeriod)
# | | | \---------------- 2 backup at 16 weeks
interval ( 8 x FullPeriod)
# | | \------------------- 2 backup at 8 weeks
interval ( 4 x FullPeriod)
# | \---------------------- 3 backup at 4 weeks
interval ( 2 x FullPeriod)
# \------------------------- 4 backup at 2 weeks
interval ( 1 x FullPeriod)
#
# Full Backups to keep when $Conf{FullKeepCnt} = [4, 3, 2, 2, 2, 0, 1,
1, 1]:
#
# 2 weeks old \
# 4 weeks old \___ 4 backups at 2 weeks interval
# 6 weeks old /
# 8 weeks old /
#
# 12 weeks old \
# 16 weeks old >--- 3 backups at 4 weeks interval
# 20 weeks old /
#
# 28 weeks old \____ 2 backups at 8 weeks interval
# 36 weeks old /
#
# 52 weeks old \____ 2 backup at 16 weeks interval
# 68 weeks old /
#
# 100 weeks old \____ 2 backup at 32 weeks interval
# 132 weeks old /
#
# >---- 0 backup at 64 weeks interval
#
# 260 weeks old >---- 1 backup at 128 weeks interval
#
# 516 weeks old >---- 1 backup at 256 weeks interval
#
# 1028 weeks old >---- 1 backup at 512 weeks interval
#
# Oldest backup can be 1028 weeks old = 7196 days = 19.7 years
$Conf{FullKeepCntMin} = 16;
$Conf{FullAgeMax} = 1;
$Conf{IncrKeepCnt} = 62-4; # 2 months minus # of full backups in 2
months
$Conf{IncrKeepCntMin} = 62-4; # 2 months minus # of full backups in 2
months
$Conf{IncrAgeMax} = 1;
$Conf{IncrLevels} = [1,2,3];
Does this calculation sound ok to you?
Best regards
Marcel Meckel
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