On Monday 28 February 2005 09:52, ddaasd wrote: >The idea with 3 groups sounds better. > >I have 2 more questions for this scenario: > >1. If my dumpcycle=5, runspercycle=5 then I need tapecycle to be > minimum 6 (runspercycle+1). These are for one group (for one week > - only weekdays). If I would have 3 groups then it seems I need 18 > tapes. Now I have only 16. So we have to order 2 more tapes. Am I > right? > Dumpcycle is in elapsed days, so if you want a weekly schedule then dumpcycle is either 7 days or 1 week, you can spec it either way.
runspercycle is how many times it gets run in one dumpcycle. So for 3 groups, you'll need 15 tapes, 16 of which you already have. > >2. How do I label the 5 tapes from every group? Do I label them the > same and change them all on weekend or Monday morning? No. Due to holidays, people taking monday off to recover from a hangover, whatever, they will not long stay in synch with such a scheme. Understand that amanda will not reuse a tape until tapecycle runs have expired, bringing the first tape back around the loop and elligible for re-use. This is the mechanism that saves our butts when we forget to change the tape. Make sure the holding disk has enough non-reserved space to accomodate say 2 backup runs, or 300% of a single tapes size with a reserved setting of 30%, and then they can be flushed, preferably one run per tape, thereby standing a small chance of keeping things somewhere near your personal idea of a schedule. Therefore, the tapes simply need to be labeled as DailySet1-01 thru DailySet1-15. Trying to make amanda fit your version of neat will make you feel a bit like a banty rooster encountering a full sized rooster. Just set it up, and let amanda do its thing. It does it quite well. >Best regards, >ddaas > >> You and Gene seem to have settled on 7,5,1, and 15 or 16 for >> tapecycle. >> >> Given that, for offsite I'd suggest you consider your tapes as >> groups of 5, i.e. 3 groups. One group will be in use, one group >> offsite, and the final group will be either the next group to be >> in use or the group that was most recently in use. The former >> ensures you are ready to switch groups over the weekend, the >> latter keeps some more recent backups on-site for recovery. -- 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) 99.34% setiathome rank, not too shabby for a WV hillbilly Yahoo.com attorneys please note, additions to this message by Gene Heskett are: Copyright 2005 by Maurice Eugene Heskett, all rights reserved.
