> -----Original Message-----
> From: Jason
> Sent: Sunday, May 08, 2011 14:04
> To: CentOS mailing list
> Subject: Building a Back Blaze style POD
>
> Hi All,
>
> I am about to embark on a project that deals with allowing
> information archival, over time and seeing change over time
> as well. I can explain it a lot better, but I would certainly
> talk your ear off. I really don't have a lot of money to
> throw at the initial concept, but I have some. This device
> will host all of the operations for the first few months
> until I can afford to build a duplicate device. I already had
> a few parts of the idea done and ready to get live.
>
> I am contemplating building a BackBlaze Style POD. The goal
> of the device is to start acting as a place to have the
> crawls store information, massage it, get it into db's and
> then notify the user the task is done so they can start
> looking at the results.
>
> For reference here are a few links:
>
> http://blog.backblaze.com/2009/09/01/petabytes-on-a-budget-how
-to-build-cheap-cloud-storage/
>
> and
>
> http://cleanenergy.harvard.edu/index.php?ira=Jabba&tipoConteni
do=sidebar&sidebar=science
Distrubing, I was on the same pages a few hours ago.
>
> There is room for 45 drives in the case (technically a few more).
>
> 45 x 1tb 7200rpm drives is really cheap, about $60 each.
>
> 45 x 1.5tb 7200rpm drives are about $70 each.
>
> 45 x 2tb 7200rpm drives are about $120 each
>
> 45 x 3tb 7200rpm drives are about $180-$230 each (or more,
> some are almost $400)
>
> I have question before I commit to building one and I was
> hoping to get advice.
>
> 1. Can anyone recommend a mobo/processor setup that can hold
> lots of RAM? Like 24gb or 64gb or more?
>
> 2. Hardware RAID or Software RAID for this?
Hardware to costly in $
Software to costly in CPU.
Try for redundancy.
>
> 3. Would CentOS be a good choice? I have never used CentOS on
> a device so massive. Just ordinary servers, so to speak. I
> assume that it could handle so many drives, a large,
> expanding file system.
>
Multiple file systems of GFS?
> 4. Someone recommended ZFS but I dont recall that being
> available on CentOS, but it is on FreeBSD which I have little
> experience with.
>
> 5. How would someone realistically back something like this up?
>
You don't. You replicate it. We are looking at using it as an online cache of
our backup media.
> Ultimately I know over time I need to distribute my
> architecture out and have a number of web-servers, balancing,
> etc but to get started I think this device with good backups
> might fit the bill.
>
> I can be way more detailed if it helps, I just didn't want to
> clutter with information that might not be relevant.
> --
> Jason
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