Amanda-Users

Re: recommended dumpcycle, runspercycle and tapecycle

2003-11-03 15:56:16
Subject: Re: recommended dumpcycle, runspercycle and tapecycle
From: Frank Smith <fsmith AT hoovers DOT com>
To: Jason Lavigne <jlavigne AT bwlogic DOT com>, amanda-users AT amanda DOT org
Date: Mon, 03 Nov 2003 14:54:03 -0600
--On Monday, November 03, 2003 15:13:44 -0500 Jason Lavigne <jlavigne AT 
bwlogic DOT com> wrote:

> (I have a few questions and figured I would split them up as opposed to
> asking all in one email)
> 
>  
> 
> To be very honest, I have no idea what these values should be for my
> setup, I have the Adic VLS DLT7000 with 7 tapes in it and I would like
> to have the ideal setup, I have a couple spare tapes but I don't really
> have the resources to buy any more tapes so I would like to rotate
> between these 7 (or 6, see below) tapes.  
> 
>  
> 
> dumpcycle 6 days
> 
> runspercycle 6
> 
> tapecycle 7 tapes

If you're running 6 days per week and not running it 1 day, I would
suggest changing dumpcycle to 7.  If you run it 7 days a week then
what you have is fine.

> 
> Side note: I am keen on placing a cleaning tape in to the final slot but
> wouldn't know how to setup Amanda to know about and take advantage of
> the cleaning tape. As it stands now I clean the drive once a week
> manually. Any suggestions about this would be greatly appreciated.

The answer to 'the best values' would be 'it depends'. How much data
do you want backed up, how long is your backup window, how old can the
data be on a restore and still be acceptable, will you ever need to
restore data previous to the last backup, etc.
   If you aren't currently using much of your tape, you could shorten
your dumpcycle and runspercycle to 3 days and give yourself two fulls
per week instead of one.

Frank
>  
> 
> TIA
> 
>  
> 
> Jay
> 



-- 
Frank Smith                                      fsmith AT hoovers DOT com
Systems Administrator                           Voice: 512-374-4673
Hoover's Online                                   Fax: 512-374-4501