dumpcycle
int
Default:
10 days
.
The number of days in the backup cycle.
Each disk will get a full backup at least this often.
Setting this to zero tries to do a full backup each run.
Note
This parameter may also be set in a
specific
dumptype
(see below).
This value sets the default for all
dumptype
s
so must appear in
amanda.conf
before any
dumptype
s
are defined.
dumpcycle 备份周期的天数,每个备份项目都会有一次全备份在这个周期内,设置为0 可以每次都是全备份
runspercycle
int
Default:
same as dumpcycle
.
The number of amdump runs in
dumpcycle
days.
A value of 0 means the same value as
dumpcycle
.
A value of -1 means guess the number of runs from the tapelist
(5)
file,
which is the number of tapes used in the last
dumpcycle
days /
runtapes
.
runspercycle 一个dumpcycle一个备份周期里备份的次数
tapecycle
int
Default:
15 tapes
.
Typically tapes are used by Amanda in an ordered rotation. The tapecycle
parameter
defines the size of that rotation. This parameter must be be larger than
the number of tapes
used in a dumpcycle.
The number of tapes per dumpcycle is calculated by multiplying the
number of
amdump
runs per dump
cycle runspercycle
(the
number of amdump
runs per
dump cycle) and runtapes
(the
number of tapes used per run). Typically
tapecycle
is set to two or four
times the tapes
per dumpcycle.
amanda tapecycle 参数 磁带循环参数中的磁带数,这个参数必须大于一个dumpcycle使用的磁带数。 每个dumpcycle使用的磁带数=runspercycle×runtapes tapecycle 最好设置为2-4倍dumpcycle磁带数
Note
Amanda is
commonly misconfigured with tapecycle
equal to the number of tapes per dumpcycle
.
In this
misconfiguration, amanda may erase a full dump before a new one is
completed,
the recovery is then impossible. tapecycle must be at least one tape
larger
than the number of tapes per dumpcycle.
注意:
amanda经常被错误设置为 tapecycle=一个备份周期使用的磁带数, 这种错误配置,amanda会在生成一个新的全备份之前清除一个全备份,这样就无法恢复了,tapecycle必须比一个备份周期使用的磁带数至少多一个。
While Amanda is always willing to use a new tape in its
rotation, it refuses to reuse a tape until at
least 'tapecycle
-1' number of
other tapes have been used.
It is considered good administrative practice to set the tapecycle
parameter
slightly lower than the actual number of tapes in rotation. This allows
the administrator to more easily cope
with damaged or misplaced tapes or schedule adjustments that call for
slight adjustments in the rotation order.
amanda每次使用一个新磁带,最佳实践:设置tapecycle参数比较实际循环的tapes少,
runtapes
int
Default:
1
.
The maximum number of tapes used in a single run.
If a tape changer is not configured, this option is not used
and should be commented out of the configuration file.
If a tape
changer is configured, this may be set larger than one to
let Amanda write to more than one tape.
Note that this is an upper
bound on the number of tapes,
and Amanda may use less.
Also note that as of this release, Amanda
does not support true tape overflow.
When it reaches the end of one tape,
the backup image Amanda was processing starts over again on the next
tape.
每次备份运行使用的磁带数,默认1 如果tabechanger未设置,则此参数与不要设置, 如果tape changer 设置了,着可以设置大于1 每次使用多于一个磁带,
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