|
Re: Fullbackup on saturdays.
2008-11-14 11:00:37
Prashant Ramhit wrote:
Hi All,
How is it possible to configure amanda for the following set up
Full backup on Saturdays and
Incremental on Monday till Friday.
On 2 Tapes only.
dumpcycle 1
tapecycle 2
You can do that. But it is counter to Amanda's whole backup strategy, it
throws away the advantages of that strategy, and it is risky to depend
on just 2 tapes in such a cycle. The full would overwrite the previous
full, leaving the incrementals with no back reference, so you end up
with only one backup at a time.
If you check the thread from yesterday and today titled "same tape for
multiple amdumps", you will see the basis for what you want. You would
need a holding disk that could hold the 5 days of incrementals. Flush
those to tape and then do a full to tape on Saturday. You might need a
dumpcycle of 6 (taking in all 6 runs for the week), and a tapecycle of
say, 7. I think Amanda will complain if tapecycle is not greater than or
equal to dumpcycle. You would only be using 2 tapes during a dumpcycle,
but the 7 would give you the added protection that you really need.
As indicated in the first paragraph, I would not recommend that
strategy. See
http://wiki.zmanda.com/index.php/FAQ:How_are_backup_levels_defined_and_how_does_Amanda_use_them%3F.
People typically ask for incrementals on weekdays to lower demand on
their systems during the working days. Amanda achieves that in a better
way, smoothing demands over the entire dumpcycle so there is no major
spike anywhere.
--
---------------
Chris Hoogendyk
-
O__ ---- Systems Administrator
c/ /'_ --- Biology & Geology Departments
(*) \(*) -- 140 Morrill Science Center
~~~~~~~~~~ - University of Massachusetts, Amherst
<hoogendyk AT bio.umass DOT edu>
---------------
Erdös 4
|
|
|
