Help With Raid 0

sas30uk · 27 Oct 2012 at 12:28

Hi guys

I have 2 x Vertex 2E's running in raid 0 both running 1.35 Firmware. These are the results im getting but im not quite sure they are right to what i should be getting, could anyone please confirm for me please ?

Surveyor · 27 Oct 2012 at 12:33

SandForce based drives only really show the full speed with the ATTO benchmark.

That's the benchmark OCZ use when they quote the maximum speeds.

sas30uk · 27 Oct 2012 at 12:42

Hi Surveyor

Thanks for the info on that.

Here is a screenshot from an ATTO bench

Are these speeds what i should be getting in raid 0 ?

Many thanks in advance

Surveyor · 27 Oct 2012 at 13:16

For a single drive maximum read 285MB/s, maximum write 275MB/s.

In theory you could get double those speeds but it usually doesn't work out so perfectly.

It's a SATA 2 drive but have you tried them connected to the Intel SATA 3 ports on the motherboard (the white ones)?

sas30uk · 27 Oct 2012 at 13:21

Not tried that yet would you recommend doing so and would i get better speeds ?

Surveyor · 27 Oct 2012 at 13:25

It can't hurt to try it.

It should be a simple matter of swapping the 2 cables on the motherboard.

sas30uk · 27 Oct 2012 at 13:41

Ok mate will try it shortly and post results soon, thanks a lot for the advice, appreciated.

sas30uk · 27 Oct 2012 at 15:48

Ok one of the leads was a little loose but they were plugged into the white slots on the mobo and this is the new result

Im guessing these are more or less around what i should be hitting for raid 0 ?

Surveyor · 27 Oct 2012 at 15:52

The benchmark has improved around 10%.

Around 520-525MB/s read and write which is not far off double the theoretical maximums of a single drive.

I'd say that's about right.

sas30uk · 27 Oct 2012 at 15:55

Perfect

thanks a lot for all the help and putting my mind to rest Surveyor, greatly appreciated.

Surveyor · 27 Oct 2012 at 16:20

You're welcome.