Crapy Raid Performance?

[Vassili]

and wow.. some guys is running 8x 150gb raptors in a raid array... thats absolutley insane.

A link would be nice!

[safan80]

A link would be nice!

go here and look

http://forums.2cpu.com/forumdisplay.php?f=26

[Timmay]

after doing a bunch of reading...the doing a bunch of tests this is what gave me best results on nforce4 chipset....there is a performance hit when NCQ is enabled as well as read caching...with read caching disabled it gives a more accurate picture...with NCQ disabled to get more speed out of it unless it is a multiuser environment....

Bloody awsome work, thanks Grinch.

[MaxxxRacer]

he doesnt give any perfomrance benches because the areca is dropping the drives all the time and he cant get the setup stable... but here is the link

http://forums.2cpu.com/showthread.php?t=74379

A BIG thanks to everyone who has helped me solved the issue of my crappy RAID 0 performance!

[Ic3man]

Thx for the tweaks...helped me!

[Grinch]

np....while back I had an obsession with raid and went crazy with it...now it is water cooling...LOL....

[vitaminc]

10+ ms random acces time

I would just get a new HDD.

10+ ms random access time is slooooooooooooooooooow

[Grinch]

unless raptors...about right...

[Delirious]

Raptor performance seems rather weak for a 10k drive even if its a 1st gen, heres my drives in my sig compared.

http://i4.photobucket.com/albums/y14...an/compare.jpg

the raptors have nearly half the burst speed.

[SamHughe]

This is what I get with 4x 150gb raptors on raid=0 (nforce)


EDIT--

HOLLY CRAP!
I applied the tweaks and look what I got:


WOW! That's big difference! Hope these settings are safe. Well...we see.

[Timmay]

KK, let me get this straight, you have 4 Raptors In RAID 0, yet you only beat me by 2MB/ps

[Grinch]

Raptor performance seems rather weak for a 10k drive even if its a 1st gen, heres my drives in my sig compared.

http://i4.photobucket.com/albums/y14...an/compare.jpg

the raptors have nearly half the burst speed.

if that is the 36gig version that is about right...

[Grinch]

This is what I get with 4x 150gb raptors on raid=0 (nforce)


EDIT--

HOLLY CRAP!
I applied the tweaks and look what I got:


WOW! That's big difference! Hope these settings are safe. Well...we see.

Glad to see some tweaking helped ya out...

[NapalmV5]

hows this for a single 74 raptor + areca controller? on msi nf4 sli x16..

64KB stripe/4KB cluster

i take it dat aint so good for a 74 raptor?

read all the replies but still confused on wats better? 16kb/16kb? 32kb/32kb? 64kb/64kb?

[Delirious]

Wow thats some impressive numbers, cpu utilization is pretty high though. you spent $1000? on HDD's, now u should get an areca controller and watch those babies fly.

if that is the 36gig version that is about right...

yah i know, just most people think 10k drive = fast which isnt always the case.

hows this for a single 74 raptor + areca controller? on msi nf4 sli x16..

64KB stripe/4KB cluster

i take it dat aint so good for a 74 raptor?

read all the replies but still confused on wats better? 16kb/16kb? 32kb/32kb? 64kb/64kb?

One drive on a raid controller? why?

Looks about right for that drive.

[NapalmV5]

One drive on a raid controller? why?

Looks about right for that drive.

oh.. its just temporary.. ill be going for 2/4 raptors shortly..

tnx!

[Hassan]

I disabled TCQ and Cached Reads and improved my read speeds by about 40 mb/s but NCQ is greyed out in my device manager, is there a reason for that?
BTW this is 4 x 36G Raptors 16k stripe default block, very nice improvement, thx guys

[Delirious]

All this raid talk makes me want to get more HDD's and a good controller.

oh.. its just temporary.. ill be going for 2/4 raptors shortly..

tnx!

The more the merrier

[SamHughe]

I disabled TCQ and Cached Reads and improved my read speeds by about 40 mb/s but NCQ is greyed out in my device manager, is there a reason for that?
BTW this is 4 x 36G Raptors 16k stripe default block, very nice improvement, thx guys

I think it's because 36G raptors don't have NCQ. If I remember correctly, NCQ was first implemented with 74G versions.

now u should get an areca controller and watch those babies fly.

I think I should.

Glad to see some tweaking helped ya out...

Thanks dude!!!

[Hassan]

yeah that's right they implemented NCQ with SATA I, as opposed to conforming to full SATA II spec

[Trice]

I think only the 150 has NCQ

[Grinch]

I think only the 150 has NCQ

Correct!

[Grinch]

hows this for a single 74 raptor + areca controller? on msi nf4 sli x16..

64KB stripe/4KB cluster

i take it dat aint so good for a 74 raptor?

read all the replies but still confused on wats better? 16kb/16kb? 32kb/32kb? 64kb/64kb?

Seems to be about right for 74giger....16/16 is really better if you use alot of smaller files like everyday (normal use) surf the web..write emails..word/excel...etc....as the stripe and cluster get bigger you will lose some bytes doing smaller stuff but it is marginal...if you are into heavy graphic rendering and unraring big file then a larger stripe (32,64,128) along with matching cluster sizes will help do those tasks better....I have found that 16/16 shows better benchmarks....personally I use 16/16....looks bada$$ in benchmarks...but if I start compiling and decoding large files again I will move up to 32/32 or 64/64....there is a hella easy way to change the default cluster size without any 3rd party software:

The "EASIEST" way to change your cluster size is to have a 3rd drive with Win XP on it....here is what you need to do.

1. Have 3rd drive with Win XP
2. Go to bios and change boot order to 3rd drive b4 Raid
3. Once in windows goto "Disk Management" (as soon as you click on it you will have a window pop up and ask you to select drive and it will also want to know if you want to convert drive to a dynamic disk...I always choose no)

4. You will see your raid drives as 1 BIG drive..now all you do is right click on the drive and click partion...primary partition...set size...now is where you can choose cluster size...you will have 3 boxes to check off...

5. NTFS or FAT32...Volume Label....Cluster Size......
6. After you check all of that off then you click off quick format and Voila...you have done it now do same on rest of drives....

7. once you have setup all your partitons and selected cluster sizes...shutdown PC unplug 3rd drive...change boot order so CD rom will be a bootable device b4 raid device and you are good to go on a clean install....remember once you get into the window when setting up XP you have choices to format drives again and choose where XP get sinstalled ...choose to leave as is...no need to format again cuz it will default to 4k cluster again.....



let me know how this goes for ....I have been doing this trick now for a VERY LONG time and I know for a fact that this is a fast and easy way...without using any 3rd party software.....

[MaxxxRacer]

Hassan, looking at your graph there, you would GREATLY benefit from an Areca card... alot of untapped potential in those HDD's with the nvidia raid system. it seems to only be able to effectively handle 2HDD's.

[Hassan]

hehe funny you say that Maxxx, I am on the lookout for one as my next upgrade, figure it would be ideal as I could move my array from rig to rig without worries. I sold my 3ware card a few months back and really miss hardware raid. i have a couple of new sata II 160G drives I wouldn't throwing into a nice array also... just 500 beans is alot