SB850 Very Poor RAID Performance

[onex]

you might want to go over this thread, it might give you some tips .

[Cecil]

you might want to go over this thread, it might give you some tips .

I saw that thread, didnt really see much that I didnt do.

However, I see now hdtune is a bad bench to use, running other ones show about 375 reads, 250 writes, which is still pretty poor.



Tried increasing SB voltage to 1.15 from 1.1,

[F@32]

I saw that thread, didnt really see much that I didnt do.

Not sure if you are on XP or not.

1. If not 7 or Vista - you need to manually align partition
2. C1E and C&Q off
3. SATA3 off
4. 8.71 chipset, AHCI and RAID drivers
5. NCQ on in RAIDXpert
6. Write back caching on
7. Buffer flushing off

You will still not see linear scaling as on ICH10R which is one of the best $/performance controllers out there.