Building a 1pb volume

[Ian Pilcher]

On 01/09/2013 09:15 AM, J.Witvliet at mindef.nl wrote:
> I am currently considering some less expensive storage arrays using 4TB
> SAS disks in 5+1 RAID 5 configurations (each array would be responsible
> for 10 such volumes).  This will give me one level of protection.  Then
> I'm going to propose a DR site with a full second set of storage.  That
> will give me a 2nd level of protection.

I'm too lazy to do the math, but a double-failure is probably not that
uncommon with this sort of configuration and drive sizes.  You probably
want to look at RAID-6 at a minimum.

-- 
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Ian Pilcher                                         arequipeno at gmail.com
Sometimes there's nothing left to do but crash and burn...or die trying.
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