Hello,
2013/5/2 Dimitri Maziuk <dmaz...@bmrb.wisc.edu>
> Hi everyone,
>
> this must be a FAQ but neither TFM nor google are being very helpful...
>
> I have a storage server with 12 SATA drives on an HBA. I want to backup
> to those drives, using file volumes of 50GB or less. The idea is to
> manually swap the drives as they get full.
>
Drop this idea. If you need to move your backups out of datacenter then buy
a tape library.
If this is not a case then why to do something manually?
Why not to use LVM or RAID to use all available hard disk space (12 x sata)
for backups? Believe me, it is simpler to create a single filesystem for
backups then use vchanger script (it is overcomplicated and IMVHO useless).
When you have a single filesystem for backups then you can configure SD
something like:
Autochanger {
Name = disk-storage
Device = File-Storage-xx
(...)
Changer Command = ""
Changer Device = "/dev/null"
}
And a number of Device resources which define a required level of
concurrency and points to the same Archive directory.
> I'm looking for the implementation with least moving parts. From what I
> see out there my choices are
>
> 1. Autochanger.
>
> Can I just omit the "Changer Command =" (or set it to /bin/true) and
> it'll magically work?
>
More or less, Yes... :) above.
>
> Or do I have to have a "fake autochanger" script -- and if I do, how is
> it supposed to work with 12 drives all mounted at once? E.g. TFM has an
> example of 2-drive configuration, but it doesn't say what "mtx-chager
> loaded" is supposed to return in that case.
>
>
You can use vchanger, disk-changer or your custom script for that purpose.
My best advice is to follow a KISS way above.
> 2. Give each client its own disk. I'll consider it if all else fails,
> but obviously this is far from optmal.
>
Yes, it is far from optimal.
best regards
--
Radosław Korzeniewski
rados...@korzeniewski.net
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