On Tue, Sep 23, 2008 at 12:12:47PM -0700, aminukapon wrote: > hello all, > > I need a brief clarification on what the dumpcycle is and how it involves > incremental backup and full backups . Most of what I have read online have > been confusing thus far. >
Basically it is the time between level 0 backups. For amanda, it is thought of as a "maximum time" between level 0's. Think about a traditional backup scheme: on Sunday night you do a full, level 0, backup of everything. On Monday - Saturday you do incrementals. Your dumpcycle in this case is 7 days, the time between level 0's. Always and for everything. Amanda does the same thing with a few caveats. - The dumpcycle is applied to each DLE, some get their level 0 on Sundays, others on Monday, others Tues etc. - Even for a single DLE, the day the level 0 is done can vary. Amanda may decide to "promote" the level 0 for some DLE and thus do it early. Why; several possibilities. Maybe a lot of data changed and the incremental would be close in size to a level 0. Amanda likes to dump the same amount each run, maybe Tuesdays level 0's have gotten too large (or small) and the order needs to be redone. Maybe a client was done one night and threw the schedule off. But again, basically dumpcycle is nominally the maximum time between level 0 dumps of a DLE. You can set it globally and on a DLE by DLE basis. jl -- Jon H. LaBadie [EMAIL PROTECTED] JG Computing 12027 Creekbend Drive (703) 787-0884 Reston, VA 20194 (703) 787-0922 (fax)
