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Benchmarking 3 120GB OCZ Vertex SSDs in RAID 0

post #1 of 12
Thread Starter 
Hi all, I have been running 3 120GB OCZ Vertex SSDs for about a year now and I am happy with the performance, but I had never benchmarked it till now, and I must say I am a bit upset. The machine being tested is my SIG and I am using the Intel ICH10R SATA controller present on the Rampage II Extreme. I have run a few different drive benchmarks (HD Tune, Everest, and ATTO) and all have fallen short of what I thought they should be.







I am comparing my results to the Velociraptor results here and the benchmark results here. I would like my array to beat out the tried and true Velociraptors, but I am really more concerened with making sure my drives are doing what they should be doing. My results are not even close to the results of the second link, and I am running 3 drives instead of 2!

Is running the benchmark with an OS installed on the array throwing the results off that much? Why is my line so jagged when the line in the second link is so smooth? Do I have $900 worth of junk drives?

P.S. I just wiped my drives and installed W7X64 right before I ran these benchmarks, so the drives are clean besides the OS.


    
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post #2 of 12
Do you have write caching enabled? It can improve performance considerably.
Go to device manager, find your drives and open up properties, go to policies and make sure that write caching is enabled as well as "turn off windows write-cache buffer flushing"
    
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post #3 of 12
Quote:
Originally Posted by Klue22 View Post
Do you have write caching enabled? It can improve performance considerably.
Go to device manager, find your drives and open up properties, go to policies and make sure that write caching is enabled as well as "turn off windows write-cache buffer flushing"
I would do this 1st. Are your drives updated to the latest fw 1.5?
This is how I install my raided vertex drive http://www.ocztechnologyforum.com/fo...marks-Provided)
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post #4 of 12
Thread Starter 
I am running Windows 7 so write caching is enabled by default, though write-cache buffer flushing was not enabled. I enabled it and noticed no difference.

I am using the latest firmware (1.5) and I must say it is a drastic improvement over 1.3 or 1.41. My benchmarks increased dramatically after letting garbage collector run last night (by letting computer set idle at log in screen, something I almost never do).

My benchmarks increased again after running sanitary erase (something I have never done, because I thought Active Kill Disk was taking care of it all... obviously I was mistaken).

I am in the process of running wiper on all of my drives (at this rate all three should be done in about a two weeks... UGH!). I let wiper run on one drive up to 15% and ran benchmark again and it had already improved.

With all of that said I think my issue was that I thought I was properly maintaining my drives, but I was not. I will post back with new benchmarks once all drives are erased, wiped, and other wise "clean".
    
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post #5 of 12
Quote:
Originally Posted by typoknig View Post
I am running Windows 7 so write caching is enabled by default, though write-cache buffer flushing was not enabled. I enabled it and noticed no difference.

I am using the latest firmware (1.5) and I must say it is a drastic improvement over 1.3 or 1.41. My benchmarks increased dramatically after letting garbage collector run last night (by letting computer set idle at log in screen, something I almost never do).

My benchmarks increased again after running sanitary erase (something I have never done, because I thought Active Kill Disk was taking care of it all... obviously I was mistaken).

I am in the process of running wiper on all of my drives (at this rate all three should be done in about a two weeks... UGH!). I let wiper run on one drive up to 15% and ran benchmark again and it had already improved.

With all of that said I think my issue was that I thought I was properly maintaining my drives, but I was not. I will post back with new benchmarks once all drives are erased, wiped, and other wise "clean".
Better late than never! I wanna see some benches of a cleaned up raid should be insane.
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post #6 of 12
Thread Starter 
Ok, using sanitary erase and wiper did the trick. Wiper was taking forever, but i was using it with my SATA as AHCI. When I changed it to SATA as IDE and used the Windows repair console (32bit) to run wiper it went really fast. I used sanatary erase before I used wiper (not sure if it matters) and I quick formatted the drives before I used wiper or sanatary erase. Check out the results, much much better than before.







I would like to point out that the two little blips in the Everest linear read test are from me switching over to another computer attached to my KVM switch. I don't know why that caused the blips but it happened each both of the times I switched with the KVM switch.

Also, I am not sure why the HD TUNE graph is so jaded, but I know I am happy with the linear read and I think everything is golden now.


    
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post #7 of 12
If I were you download intel matrix storage manager and enable write back cache you will see a bump in your burst rate. Just look at my 2 vertex that are raided
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post #8 of 12
Thread Starter 
I didn't trust HD Tune before (because of the results it has given me and because of what others have said) but after seeing the pic you posted I really don't trust it. There is no way you are getting a burst rate of 3000MBPS, no way at all. I am also surprised to see that your Min, Max, and Average numbers are so much higher than mine when you are only running two drives instead of three, and it looks like you are running the 30GB drives, which are slower than the 120GB drives. Your ATTO results are about what I would think they would be when compared to my results and the results of other similar benchmarks. I would be interested in seeing what kind of numbers you got with Everest.

Check the excerpts below from Wikipedia. The information provided in those excerpts is supported by my latest ATTO results which puts my max throughput right at 600MBPS, which also indicates that the 3GBPS bandwidth provided by SATA 2.0 is not per SATA port, but rather 3GBPS of bandwidth divided up among all the SATA ports on the bus.

SATA Revision 2.0 (SATA 3 Gb/s)

Second generation SATA interfaces running at 3Gb/s are currently shipping in high volume. As of 2010[update] and prevalent in all SATA disk drives and the majority of PC and server chipsets. 3.0 Gbit/s, communicate at a rate of 3 Gbit/s. Taking 8b/10b encoding overhead into account, they have an actual uncoded transfer rate of 2.4 Gbit/s (3000000000*8/10/1024/1024/8 ≅ 286.10 MiB/s). The theoretical burst throughput of SATA 3.0 Gbit/s is roughly double that of PATA/133. Also, SATA devices offer enhancements such as NCQ that improve performance in a multitasking environment.


SATA Revision 3.0 (SATA 6 Gb/s)

Serial ATA International Organization presented the draft specification of SATA 6 Gbit/s physical layer in July 2008,[9] and ratified its physical layer specification on August 18, 2008.[10] The full 3.0 standard (peak throughput about 600 MB/s ( 10b/8b coding plus 8 bit to one byte, without the protocol, or encoding overhead) was released on May 27, 2009.[11] While even the fastest conventional hard disk drives can barely saturate the original SATA 1.5 Gbit/s bandwidth, Solid-State Drives have already saturated the SATA 3 Gbit/s limit at 250 MB/s net read speed. Ten channels of fast flash can reach well over 500 MB/s with new ONFI drives, so a move from SATA 3 Gbit/s to SATA 6 Gbit/s would benefit the flash read speeds. As for the standard hard disks, the reads from their built-in DRAM cache will end up faster across the new interface.[12] SATA 6 Gbit/s hard drives and Motherboards are now shipping from several suppliers.
    
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post #9 of 12
Does anyone know how I can get the OCZ 32Gb Vertex 1.3 and 1.4/1.41 Firmware fiels really quickly without having to contact OCZ? PM me if you know where/ how to get them...
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post #10 of 12
Thread Starter 
Take a look here. The firmware for all OCZ Indilinx based drives is the same.

Quote:
Originally Posted by Mastiffman View Post
Does anyone know how I can get the OCZ 32Gb Vertex 1.3 and 1.4/1.41 Firmware fiels really quickly without having to contact OCZ? PM me if you know where/ how to get them...
    
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