Questions, about hardware for fast mogilefs

[Krzysztof Kulicki]

Hi,
Presently, I'm having 3 600 000 fotos in average 50KB per one, and 5 000 000
thubms in average 3KB per one, so its occupy in total disk storage about
200GB.
I in peak hours traffic is about 5500 queries per second.
Below is statistic of traffic from one domain :
domain2.com: (queries for file per hour)

2007-01-07 13:00 2007-01-07 14:00 8 877 219
2007-01-07 14:00 2007-01-07 15:00 8 586 457
2007-01-07 15:00 2007-01-07 16:00 8 479 585
2007-01-07 16:00 2007-01-07 17:00 8 438 471
2007-01-07 17:00 2007-01-07 18:00 8 802 175
2007-01-07 18:00 2007-01-07 19:00 9 299 118
2007-01-07 19:00 2007-01-07 20:00 10 334 540
2007-01-07 20:00 2007-01-07 21:00 11 069 773
2007-01-07 21:00 2007-01-07 22:00 9 642 031
2007-01-07 22:00 2007-01-07 23:00 5 635 150
2007-01-07 23:00 2007-02-07 00:00 2 498 822
2007-02-07 00:00 2007-02-07 01:00 1 077 072

I would be able to obtain 20 units of sun x2100 M2, which each of other has
2 SATA disks, two processors Opteron dual core. And such unit is able to
have max 64 GB ram. So, my question is how many units I'll need? and  how
many ram per one? Does mogilefs see few disk like one virtual, and write and
read data from each other at same time? The main purpose is to increase the
traffic from 5500 q/s to 10000 q/s (q/s  - queries per second)

Thanks for all solutions from you

Krzysztof

P.S  sorry about my English, I hope, you understand me :)
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