>-----Original Message----- >From: Les Mikesell [mailto:[email protected]] >Sent: Friday, January 14, 2011 2:53 PM >To: [email protected] >Subject: Re: [BackupPC-users] OT: New backup server with 6TB disk space > >>> Is there a lot of block-level duplication among these? If so it might >>> be worth setting up something with zfs. >> >> How can I tell? > >Ask someone who creates the large data sets if they copy any or all of it from >something that already exists. Backuppc will not pool data if there is one byte >of difference in a huge file, where block level de-dup in the filesystem would >use space for unique blocks. If everyone is working with slightly different >versions of the same data, you could easily save enough space to run a raid >level that would protect against a disk failure.
Ah, ok. Got it. Each user creates his or hers own datasets, which differ.
Only rarely they start from the same starting-points. Unfortunately... 8-/
>>>Any particular reason I should look into Nexentastor? The Zfs?
>
>Nexentastor gives you a web admin interface so you don't need to know much
about
>the underlying OS (which is opensolaris) or how to configure zfs. If you
have
>new hardware it's pretty easy to drop in and test. You could even run it
as an
>nfs server with the backuppc system running on something else. Otherwise if
you
>can wait another month or so, I'd wait for CentOS6 and use xfs. Actually
you'll
>probably want the OS on its own separate small partition(s) anyway so it
doesn't
>matter that much - but I think RHEL6 (and thus eventually CentOS6) is
supposed
>to install on xfs as an option.
Isn't Opensolaris dead now?
I might try it - Nexentastore - out anyway, but planning to run CentOS 5.6
or 6 when either's released. I'm kinda' hoping CentOS 6 is worthwhile,
especially with the new filesystems available.
I tried the RHEL6 beta a while ago, and was less than impressed that
the installer for some reason nuked the dual-boot Windows-partitions w/o
asking on the test-box I had available at the time. 8-/
--
/Sorin
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