RE: Ideal hardware spec?

["Stephen Perkins" <perkins@netmass.com>]

>>> Given that "massive" is a relative term, I am as well... but I'm 
>>> also trying to reduce the footprint (power and space) of that 
>>> "massive" cluster.
>>> I also
>>> want to start small (1/2 rack) and scale as needed.
>>
>> If you do end up testing Brazos processes, please post your results! 
>> I think it really depends on what kind of performance you are aiming for.
>> Our stock 2U test boxes have 6-core opterons, and our SC847a has dual 
>> 6-core low power Xeon E5s. At 10GbE+ these are probably going to be 
>> pushed pretty hard, especially during recovery.
>>
>
> I'm aiming for a Ceph cluster of a couple of hundred TB consisting out 
> of 5 or 6 racks full of 1U machines with each 4x 1TB.

Thinking along the lines of the approach of many 1U by 4 drive host (as
above) with no hardware RAID... what are the thoughts between SATAII (3G/s)
vs SATAIII (6G/s) and on 1G Ethernet versus 10G Ethernet.

- Steve

P.S.  I will be assuming a replication level of 3 copies and would probably
be looking at 10 nodes or less initially.  Maybe populating with 6 drives
instead of 4 (if I can find the right chassis).