Re: Building a 1pb volume

[Adrian Sevcenco <Adrian.Sevcenco@xxxxxxx>]

On 01/09/2013 05:09 PM, aragonx@xxxxxxxxxx wrote:
> Hi,
>
> I'm looking to build a 1PB (usable) volume on a Fedora or Redhat
> platform.  The volume (has to be a single volume) will be shared out by
> NFS.  My considerations in the order of importance are:
at this size i imagine that you need some speed with multiple concurrent 
accesses .. NFS is not up to the task .. i would advise to use lustre 
that will also give you the aggregation of space that you want

> Data loss
> Cost
> Speed
>
> I am currently considering some less expensive storage arrays using 4TB
> SAS disks in 5+1 RAID 5 configurations (each array would be responsible
if you value your data i would advise strongly against raid 5 (it will 
become lost as soon you have 1 disk down and 1 transient read error)
IMHO you need RAID6 with volumes of 15 disks (in a 60 hdd 4U jbod you 
can have 4 RAID6 volumes)

HTH,
Adrian

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