[SGVLUG] scary RAID 5 going going .. soon 2 be gone?

[Claude Felizardo]

On Wed, Jan 14, 2009 at 6:07 PM, Rae Yip <rae.yip at gmail.com> wrote:
> One of the motivations for ZFS is to deal with partial disk failures
> (such as URE) more gracefully. But it certainly is a problem as drives
> get larger.
>
> As for the virtual appliance below, it seems to be based on BackupPC.
> That means it'll work great for Unix as long as you have rsync; SMB is
> only required for backing up Windows (even then, only if you don't
> care to install cygwin/rsync). It's Perl-based, but assuming the main
> bottleneck is disk I/O, it performs alright.
>
> A quick glance at the docs show that it's pre-compression file-level
> dedupe, and standard zlib compression (ie. varies between 5-90%
> compression depending on your data).
>
> Shang-Lin uses BackupPC at work, so maybe she can tell you more.
>
> -Rae.
>
> On Wed, Jan 14, 2009 at 2:17 PM, Zack, James <JZack at unex.ucla.edu> wrote:
>> I hope that's not 10Tb on IDE/ATA drives! (tick, tick, tick)
>>
>> Your cheapest solution might be another 10Tb of disks and unless there
>> is an open source dedupe solution out there.  Commercial dedupe is too
>> expensive for home/hobby use.  My Google-Fu turned up this open source
>> solution:
>>
>> http://gotitsolutions.org/2007/01/15/open-source-backup-and-data-de-dupl
>> ication-virtual-appliance-2.html
>>
>> I have not tried it, and it's not clear if this is a file level dedupe
>> or a block level one, and if it's pre or post process, nor what the
>> compression ratio is, and it looks like it only works with SMB :/

I really need to set something up that will backup both my windoze
boxes and fileserver.  If it can be done by a single tool all the
better.  Can we get someone to give a presentation/demo on either this
BackupPC Virtual Appliance or the underlying BackupPC program?