Raptor worth it ?

BeelzebubUK · 6 Jan 2007 at 18:07

Posted this in another thread but nice to have as many comparisons in one thread I guess :

2x 150GB Raptors RAID0 on the Intel RAID of the Asus PW5 DH deluxe.

32Mb test :

Trox · 6 Jan 2007 at 20:14

Dr_Evil said:
Did you do a short or long test?

How comes you have more throughput than my 16mb cache models? also your avg access time is lower than mine...

Short or long is doesnt matter, i get the same results

The above post looks a lot more like it how yours should be maybe

FunkyCowie · 6 Jan 2007 at 20:44

BeelzebubUK said:
Posted this in another thread but nice to have as many comparisons in one thread I guess :

2x 150GB Raptors RAID0 on the Intel RAID of the Aus PW5 DH deluxe.

32Mb test :

Same speeds as my SATA config in my sig...

Duke · 6 Jan 2007 at 22:06

Here is my Raptor 74GB - 8MB cache I think? (2.5yrs old)

kablooey · 6 Jan 2007 at 22:06

Just for comparison...

2 x 36GB raptors (8MB) RAID 0

I know someone with 2 (unless he's brought more

)15k SCSI drives in raid 0 who posts here, I'll get him to post his results.

Dr_Evil · 8 Jan 2007 at 09:46

Trox said:
Short or long is doesnt matter, i get the same results

The above post looks a lot more like it how yours should be maybe

Could this performance depend on the type of RAID controller used? I'm using an integrated NVidia RAID controller...

rpstewart · 8 Jan 2007 at 09:51

Dr_Evil said:
Could this performance depend on the type of RAID controller used? I'm using an integrated NVidia RAID controller...

Absolutely, looking at various graphs on different forums it appears that the Intel Matrix RAID controllers are slightly quicker than the NForce4 ones which in turn are a fair bit quicker than the onboard Silicon Image chipsets.

The stripe size used in the array will also affect benchmark results - take a look here for an example.

Dr_Evil · 8 Jan 2007 at 10:03

rpstewart said:
Absolutely, looking at various graphs on different forums it appears that the Intel Matrix RAID controllers are slightly quicker than the NForce4 ones which in turn are a fair bit quicker than the onboard Silicon Image chipsets.

The stripe size used in the array will also affect benchmark results - take a look here for an example.

Is it possible to change the stripe size without having to re-install?

rpstewart · 8 Jan 2007 at 10:25

Dr_Evil said:
Is it possible to change the stripe size without having to re-install?

Not to my knowledge, it's done at the array creation stage so you have to delete and recreate the array which unfortunately will delete the previous contents.

FatRakoon · 8 Jan 2007 at 11:10

rpstewart said:
Absolutely, looking at various graphs on different forums it appears that the Intel Matrix RAID controllers are slightly quicker than the NForce4 ones which in turn are a fair bit quicker than the onboard Silicon Image chipsets.

And the PCI Card Version of a given Controler is often much quicker than its onboard equivalent.

Massive Attack · 8 Jan 2007 at 14:31

kablooey said:
I know someone with 2 (unless he's brought more )15k SCSI drives in raid 0 who posts here, I'll get him to post his results.

please do, will be intresting to see

BeelzebubUK · 8 Jan 2007 at 17:20

BeelzebubUK said:
Posted this in another thread but nice to have as many comparisons in one thread I guess :

2x 150GB Raptors RAID0 on the Intel RAID of the Asus PW5 DH deluxe.

32Mb test :

Decided to change my stripe size from 128k down to 32k (just ghosted the image back again) and this is the new graph which looks decidely different but got 19MB/s increase in Average transfer rate :