I have two 500Gb Western Digital Caviar Black drives in RAID 0 was wondering if My RAID 0 Stripe is running as it should
 
See attached Picture
 
 
"Use Ctrl + to zoom in"
 
HDTune_Benchm..._0_Volume

Chaos_21

You should have a storage controller in your nvidia control panel, run smart self test

Don't have that in my control panel...

My WD Black 500GB

HD Tune: WDC WD5001AALS-00L3B2 Benchmark
Transfer Rate Minimum : 44.6 MB/sec
Transfer Rate Maximum : 94.5 MB/sec
Transfer Rate Average : 75.9 MB/sec
Access Time           : 13.0 ms
Burst Rate            : 113.7 MB/sec

Compare 640GB Black


[size=3 font="times new roman"]HD Tune: WDC WD6401AALS-00L3B2 Benchmark
[size=3 font="times new roman"] 
[size=3 font="times new roman"]Transfer Rate Minimum : 59.1 MB/sec
[size=3 font="times new roman"]Transfer Rate Maximum : 118.1 MB/sec
[size=3 font="times new roman"]Transfer Rate Average : 96.4 MB/sec
[size=3 font="times new roman"]Access Time           : 11.8 ms
[size=3 font="times new roman"]Burst Rate            : 125.3 MB/sec

I always test each drive as is first and HD Tune tests drives, not volumes. The graph shows the entire platter, not just one area.
Along with that, I run WD Diagnostic and do the Extended Test and full format. And only then commit data or system or create an array.

But you can infer what they should deliver, and the 640GB has an edge.

I have 2 WD640GB blacks and I averaged about 179mb/s read. I think yours is messed up somewhere.

wow, those are some impressive speeds with just HDD, my raid 0 array with 3 7200.11 drives averages about 100MB/s read 70Mb/s write.  My 2 OCZ vertex drives on the other hand..... i'll let the image speak for itself

Neat benchmark Moose.

My write speed is higher than my read speed.  What does that mean?  Odd...

Ok, so you are using a 128KB stripe size.  That seems a little high to me, but it really depends on what you do with your drives.  Larger stripe sizes will work better at transfering larger files.  A stripe size of 128KB will theoretically transfer best at file sizes between 2048 and 4096 KB which is exactly what the ATTO benchmark confirms.

I choose to use a 64KB stripe size which will theoretically best transfer files between 1024 and 2048 KB.

I was just curious, that's all.  Curious because your HD Tune result seemed so good comparred to mine.  Are you using a dedicated RAID controller?  It appears that you must given that HD Tune states that no CPU processing power was required to accomplish the test.  Assuming that you have a dedicated RAID controller and I don't, that could explain why your "inferior" drives perform so closely to mine.

ty_ger07

Ok, so you are using a 128KB stripe size.  That seems a little high to me, but it really depends on what you do with your drives.  Larger stripe sizes will work better at transfering larger files.  A stripe size of 128KB will theoretically transfer best at file sizes between 2048 and 4096 KB which is exactly what the ATTO benchmark confirms.

I choose to use a 64KB stripe size which will theoretically best transfer files between 1024 and 2048 KB.

I was just curious, that's all.  Curious because your HD Tune result seemed so good comparred to mine.  Are you using a dedicated RAID controller?  It appears that you must given that HD Tune states that no CPU processing power was required to accomplish the test.  Assuming that you have a dedicated RAID controller and I don't, that could explain why your "inferior" drives perform so closely to mine.

ty_ger07

Sorry man, I wanted to post this in your x58 thread, but the huge image files were really screwing things up for me.

Next time, I would consider placing image thumbnails in the thread linking to the full size image for people like me.  Either that or reduce your image dimensions by half.  Few of us need a 800x600 view of your hardware.  400x300 is usually plenty.

Anyways...

Yeah, I would consider volt modding those 8800GT cards if you don't care about their warranties and whatnot.  Being that they are air cooled though, things would be tricky.  Maybe you should leave them as they are now that I think about it.

I tying to look through your pictures to verify that you have a dedicated RAID controller card, but wasn't patient enough to wait for all the images to load.

Either way, nice build!

Sorry about the large picture files... Next time I post more then 5 pictures Ill resize them to a much smaller res, And I am NOT using a RAID card, just the built in RAID controller on the 4 Way Classy And I saw your volt mod thread, I would do it but I don't plan on using them after fermi comes out except for compairison vantage runs.

Zacha
I have two 500Gb Western Digital Caviar Black drives in RAID 0 was wondering if My RAID 0 Stripe is running as it should

 
Lookin good. Your results seem to indicate, like ty_ger07 said, that something else started running during the test. 
 

ty_ger07
For comparison, here is my HD Tune read test on my RAID 0 velociraptor array. 

You are giving me a run for my money.  I am using onboard RAID which cuts down on performance a bit.  I wish I could throw a nice dedicated RAID card in the system, but I can't fit one in with three video cards.

I have three VelociRaptors and was surprised to see that the Seagate xx.12 ($cheap$cheap) technology drives have a higher data transfer rate. A couple 1TB drives would have awesome performance.  --But we still have a 2:1 seek time advantage.

bidley

Looks about right for a 2 disk raid 0 with those drives, as others have stated it looks like something else accesed the drives towards the end of the test, so I would throw out the minimim and avg.  I don't have a scrrenie, but my 3 disk 74gb raptor raid 0 max read was just a touch over 200MB, so for the price I would say you've got a good thing there.
 
@Moose517   I hate you, nah not really...but I can't wait until SSDs drop in price.  Are you running that on mobo controller? or do you have a dedicated card?

both those images are of my raid arrays using the onboard ICH10R controller :D getting a dedicated raid card after the holiday(my own christmas gift)

I have 4 raptors 150GB in RAID 0 using my Areca 1220 Raid Controller

Transfer rate are:
Min  193.2 MB/S
Max 330.6 MB/S
Avg 281.6 MB/S

Access Time:
8.3 ms

Burst Rate:
397.6 MB/S

CPU Usage:
9.6%



edit: I tried to upload my pic but it didnt work

from left to right :
2xWD 500 caviar blacks raid 0
1TB caviar black
500gb western digital caviar 16mb cache

wonder what's accessing my drives during the test?