Hi,

we have build our system in april-may.
Hardware is redundant:
Mainboard Supermicro X8DT3
Chasis SC836
CPU 1xIntel Xeon 5550W
RAM 24GB (6x4GB)
Raid Controller Adaptec ICP Vortex 8165BR with BB 256 Cache
HDD 16x Western Digital 1TB Raid Edition 3
NIC Intel 10gbe CX4 Dual Port

Switch
2x HP 6400cl CX4

we have 2 Citrix XEN Server as "Client"
Hardware 2xIntel Xeon 5550W with 32GB RAM and Intel 10gbe CX4 Dual

Performance Windows 2008

with write cache on: ca 90000 io/s
with write cache off: ca 25000 io/s

Performance with Citrix XEN (windows 2008 guest):

with write cache on: ca 66000 io/s
with write cache off: ca 15000 io/s

there was no differenz between raid 10 and raid 6 !

so we use raid 6 iscsi for our production system.

the perfomance measure was taken with sqlio and the folowing parameters

sqlio -kW -s60 -frandom -o64 -b4 -BH -LS -Fparam.txt
d:\testfile.dat 2 0x0 10

for xen we make some special config.

we also tested dss with 2x Xeon X550w and 48GB RAM , but the system seems to be slower with that config.


so i hope this will help you.

regards
roger