Joshua,
Thanks - understanding grows daily.
I'd previously (and erroniously) understood that concurrent
amanda-server usage on a single amanda-server would cause
socket conflict if not configured to use separate amanda
binaries with different port ranges.
My understanding that no single client should be asked to reply to
more than one server (at any given time) still holds though
ie: all of the disks on client A should be sent to the server 2
never: some DLE on client A to server 1 and some to server 2.
With this new information I may try to juggle my backups around
a little bit. While its been nice to have local v remote tape
pools the amount of data backed up by each is far from balanced
and it might be a good idea for me to slide some clients from
the "remote" config to the "local" one.
That particular server has 2-jukeboxes each with a single LTO drive,
and is fortunately unique at my site.
There is no way at the moment to configure a single amanda server to
write to two drives concurrently ? Meaning, balance the DLE being
written to each of the two jukeboxes/drives so that I could utilize
both tape drives concurrently, not mirroring the tapes but one writing
DLE A,B,F,G and the other C,D,E,H, as they complete ? Or I guess an
equiv would be a single jukebox with two active tape drives ?
thanks,
Brian
> On Mon, 29 Mar 2004 at 12:12pm, Brian Cuttler wrote
>
> > Isn't there a possiblity of port conflict on the server ?
>
> Not that I'm aware of. The server checks for open ports before telling
> the clients (in the UDP packets) what ports to communicate with the server
> on. There *is* the possibility of port conflicts on the clients (since
> all the UDP requests to go 10080), thus the limitation of clients only
> being in one config at a time.
>
> > Don't you have to have separate binaries on the server for
> > the different configs if they are accessing the same ethernet
> > interface ?
>
> Err, why? I don't think so.
>
> > I got around this on my site by having one config backup local
> > disks and another config backing up disks that where attached
> > to amanda-clients != amanda-server.
> >
> > Was that unneccessary on my end ?
>
> I think so. :)
>
> To be clear, I run two configs simultaneously on one of my servers, each
> using 1 of the 2 AIT3 drives in my library. It works flawlessly.
>
> --
> Joshua Baker-LePain
> Department of Biomedical Engineering
> Duke University
