On 01/09/2013 05:09 PM, aragonx(a)dcsnow.com 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