--On Monday, June 10, 2002 16:46:46 -0700 Mike Heller <[EMAIL PROTECTED]> wrote:

> Hello,
> 
> I just installed amanda without issue and have been reading the man pages, faq, and 
>egroups archive.  I still have some issues.  First some details on my setup.  I have 
>a Linux server with an internal tape drive.  I have 8 tapes (DLT 20/40) and want
> at least one full backup per week.  I read that amanda always writes from the start 
>of the tape (no appending).  That is fine, it's what I do now with tar and cron.  I'm 
>not here to change tapes on the weekend so backups will run only on the weekdays
> (which I will schedule in cron).  Right now, I will be backing up only the local 
>machine, no clients.  Also, I don't have much drive space to buffer the backups to 
>disk before they go to tape (27GB of drive space, about 25 full).   Now, what I don't
> really understand is some of the config file options.  I want at least one full 
>backup each week.  My current config is:
> 
> dumpcycle 7 days
> runspercycle 7
> tapecycle 8 tapes
> 
> But I'm not sure if that should be
> 
> dumpcycle 5 days
> runspercycle 5
> tapecycle 8 tapes
> 
> since I will only be doing backups on the weekends.  
> With these configs, I'm not sure when amanda will do full backups.  This is a bit 
>confusing to me.

What you want is:
  dumpcycle 7 days
  runspercycle 5
  tapecycle 8tapes

That tells Amanda to schedule at least one full backup on each filesystem
each 7 calendar days, but there are only 5 runs during that time to do it.

> 
> Next, I have the following tape device:
> Compaq 20/40-GB DLT Drive
> http://www.compaq.com/products/storageworks/dlt2040/index.html
> http://www.compaq.com/products/quickspecs/10234_div/10234_div.html
> 
> I'm not sure which tapetype to use (or how to configure my own) from the specs 
>above, there doesn't seem to be a match in the files and the specs don't give me the 
>needed values.  Is there a default DLT setting?

You can run tapetype yourself, although it can take many hours (days?)
to complete.  Make sure you are using the non-compressing tape device
to get good numbers.  Otherwise, look in the FAQ-O-Matic, or just use
the vendors stated capacity for starters.  No matter how you arrive at
your initial tape length, you may need to adjust it downward as needed
if your backup runs hit EOT (taper will tell you how many bytes it wrote).

Good luck,
Frank

> 
> Thanks for any help you can provide.
> Mike



--
Frank Smith                                                [EMAIL PROTECTED]
Systems Administrator                                     Voice: 512-374-4673
Hoover's Online                                             Fax: 512-374-4501

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