Hi Paul,
I guess I wanted it to do full backups on the Saturday just for ease of
administration. That way I would know exactly which tapes the full dumps
were on and I could send them to storage accordingly.
I'm just a bit worried, for example, that the full dump for 1 disk on 1
server gets done on a Monday, while the full dump for another disk on
another server gets done on a Tuesday etc.
I have five disks per server, 15 in all. I would like to be able to pick
up a tape and say "this is a tape with a full dump on it" or even "this
is a tape with a few full dumps on it". Basically I would like to
differentiate the full dump tapes from the incremental ones.
If I let amanda do the scheduling then maybe one tape will have some
incremental dumps on it as well as a full dump of some arbitrary disk -
a bit of a management nightmare.
Maybe I am not fully understanding the way Amanda does things though.
Thanks,
Mark
-----Original Message-----
From: owner-amanda-users AT amanda DOT org
[mailto:owner-amanda-users AT amanda DOT org] On Behalf Of Paul Bijnens
Sent: Wednesday, September 10, 2003 12:26 PM
To: Mark Le Noury
Cc: Amanda
Subject: Re: configuration question
Mark Le Noury wrote:
> I have set up amanda and it is running fine - I was using it to do a
> full dump of 3 fileservers every night. We are using an autoloader and
> the dump was running across 4 tapes and taking 15 hours to do.
>
> We then decided it would be better to start incrementally dumping the
> servers during the week and doing level 0's on Saturday.
Was that decision made because "we're used to this kind of scheduling"
or because "spreading the fulls over a complete cycle is not good".
If the latter, what do you think is wrong, or why is this not good
enough.
> I was just wondering, If I set my dumpcycle to 7, runspercycle to 6
and
> tapecycle to 45( I inc tape per day + 4 level 0's per week * weeks in
> month) how is it that I would tell amanda to only run level 0's on
> Saturday and incrementals during the week? As far as I can tell Amanda
> schedules all that kind of stuff according to her own feeling.
This would work out perfect, but, Amanda will insist on scheduling it
all herself. And believe me, she does a good job doing that.
Actually, you probably need only 7 tapes to cover a complete
full+incremental cycle if you let amanda do it her way: one tape each
day, using the autoloader to provide the tapes in the weekends, while
nobody is there to insert a fresh tape (maybe even less, depending on
the size of the incrementals and if you run only on weekdays).
Also the total run time each night will be much less than 15 hours;
I guess around 4-5 hours: the time to write one tape + some time for
the estimates.
Doing it the other way would need 4 + 6 tapes: one set of full
backups needing 4 tapes and each day 1 tape for incrementals.
> I'm guessing I need to set up two configurations - one using strategy
> nofull and one using strategy noinc. What I really need to know is if
> that is really the best way to go - or if there is something else that
> could be done that might be easier to manage?
Amanda can be forced into such contortions using something like the
setup above, but I've tried to.
Another way is to run one config with noinc during week and do a
"amadmin force" for every machine before the weekend run. (Never tried
that either.)
--
Paul Bijnens, Xplanation Tel +32 16 397.511
Technologielaan 21 bus 2, B-3001 Leuven, BELGIUM Fax +32 16 397.512
http://www.xplanation.com/ email: Paul.Bijnens AT xplanation DOT com
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