Arno, On Sunday 09 September 2007 08:01:19 pm Arno Lehmann wrote: > Hi, > > 10.09.2007 00:40,, Ivan Adzhubey wrote:: > > Hi, > > > > Since the amount of data on our servers increased lately, I am thinking > > about upgrading our hardware. We currently run Qualstar RLS-4445 > > autochanger with a single Sony SDX-700C (AIT-3) drive installed. > > Autochanger has 4 vacant drive slots and according to manufacturer > > supports AIT-3, AIT-4 and AIT-5 drives. I am thinking about AIT-5 as a > > second drive and would appreciate any comments on this model. Looks like > > both AIT-4 and AIT-5 tapes are about the same price and with the latter > > having twice the capacity it makes sense to go for AIT-5 unless there are > > some reliability issues of which I am not aware. How good is the current > > bacula version with multiple drives? I read that multiple drive handling > > was mostly broken before 2.x.x, > > Broken... no. Imperfect - yes :-) > > Actually, as of 1.38, multiple autochangers *mostly* worked correctly. > Since 2.2, most problems that can happen should be fixed. > > > is it up to production level now? > > I think so. > > But note that having different drive types in one autochanger can > limit you a bit. Bacula has no simple way to ensure that - in your > case - AIT-3 drives are not used for AIT-5 tapes. This can be achieved > by setting different Media Types, obviously, but I don't think the > multiple-drive support is tested with such a setup yet.
You see? That's what I call broken ;-). Your definition may vary of course. Documentation states however that setting different MediaTypes should do the trick in this case. I guess I will have to try... > As I haven't access to such a system, I never tried what happened, but > I'm more or less sure you will encounter some problems. As far as I > can tell, it would be best to ensure that your pools only contain > media of one type. I may as well simply define two different Autochanger devices with one drive per each and keep their tape pools completely separate. This makes sense since new drive is supposed to be reserved for a separate set of clients anyway. > Apart from that, I don't see any reasons why I, personally, wouldn't > give it a try. Even if at first things don't work perfectly, I'd > expect them to work smooth enough, and I'm sure Kern will try to work > on any remaining issues as such a setup fits well to his ideas of > "going enterprise" :-) Will gladly share my experience. Now all I need is to secure some funds for this upgrade ;-). --Ivan ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
