> Hi there,
> some thoughts on that:
>
> On 09.01.2013 17:09, aragonx@dcsnow.com wrote:
>
>> Data loss
> this is a matter of backup strategy, you mean availability here?

This is a long term archive and this data will only reside here.

> afaik the biggest SAS disks are 900GB, you mean NL-SAS? Even with the
> 4TB disks (which I would not recommend since they are ridiculously
> overpriced compared to 3GB) in RAID + Hotspare we're talking ~300 Disks
> here. How do you plan to house, connect, power and monitor them?

I calculated we would need 3 racks for the arrays, servers and switches.  We have the space in our datacenter so that won't be an issue.

> so you want a redundant storage system? Over what link would you plan
> to sync the two storages?

The application would probably write to both clusters at the same time.  The application has two sites also and I would locate this storage close to it.

> This sound all very ambitious to me. Maybe you should consider buying
> an entry-level or even mid-range storage system like IBM DS3512 or
> similar...

We have been looking at a Dell PowerValut group of arrays or the Compellent  (BSD isn't so bad).  I'll take a closer look at the IBM too.  But since this data will exist no where else, I would like some additional redundancy above the security the array and DR site provide.

So far, complete solutions to handle all of this go well above my budget.

Thank you!
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