Hi, On 1/5/2007 10:13 PM, Mike Seda wrote: > Hi All, > I plan to install bacula next week. I am just curious as to what > "Maximum Spool Size" should be set to if my goal is to backup a total of > 3 TB over gigE. I am still going for a D2T solution, but I just wanted > to see if you guys think that leveraging 100 to 300 GB of unused disk > for spooling would help avoid shoe-shine.
That would definitely help. The optimal spool size would be exactly one tape contents, but that's hard to manage. I consider a limited number of writing stop/starts no problem, so if your tapes hold, for example, 600 GB I would think that your suggested spool size is ok. In theory, a 600 GB tape with a 200 GB spool file would be filled in three chunks. As the sizes never add up that well, and the actual tape capacity is never that exact, you will find that it takes three or four despooling turns which doesn't sound too bad for me. In general I'd recommend to make the spool are as big as possible. If you can fit your complete backup set into the spool area, you'll also minimize the time you use the network and load the clients, which might be worth something, too. If you'll implement a D2D2T backup, you'll need that much disk space anyway. Arno > Thx in advance, > Mike > > > Per Andreas Buer wrote: > >>Hi. >> >>The documentation says it does not make sense to spool data to disk when >>doing backup to disk. I'm using migration and I believe it actually >>makes sense to spool the data first. I plan to run between 10 and 20 >>jobs in parallell - so the migration jobs are running the data from disk >>to tape the data will probably be read between 10 and 20 times. If the >>data are spooled first I believe the migration should run a lot quicker >>- because the data won't be intermingled. Backup might actually be a bit >>slower - but I'm planning of using a couple of rather fast disked - >>striped - in order to mitigate this. >> >>Does this makes sense? I haven't tried this yet as I am only backing up >>one client at the moment. >> >>Happy new year, people. Thank you for making this excellent piece of >>software. >> >>Per. >> >>------------------------------------------------------------------------- >>Take Surveys. Earn Cash. Influence the Future of IT >>Join SourceForge.net's Techsay panel and you'll get the chance to share your >>opinions on IT & business topics through brief surveys - and earn cash >>http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV >>_______________________________________________ >>Bacula-users mailing list >>Bacula-users@lists.sourceforge.net >>https://lists.sourceforge.net/lists/listinfo/bacula-users >> > > > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys - and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Bacula-users mailing list > Bacula-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bacula-users -- IT-Service Lehmann [EMAIL PROTECTED] Arno Lehmann http://www.its-lehmann.de ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
