6 Replies Latest reply on Apr 28, 2011 9:35 PM by DuckieHo

    Four Intel X- 25 M  80 GB Raid 0 performance

    Certified

      Hello, I am new to intel forums and looking for some information.I just finished installing latest firmware and Windows Ultimate 64 bit along with all drivers. I ran a bench for my RAID 0 performance and something does not add up right. I should be getting over 800 mb read but I am not getting those type of numbers. To bench my raid I used HD Tune Pro 4.60 and these are the results.

       

       

      Minimum = 555.4 MB/s

      Maximum = 697.3 MB/s

      Average = 621.0 MB/s

      Access Time = 0.082 ms

      Burst Rate = 5662.9 MB/s

      CPU usage = 3.0 %

       

      System Specs

       

      I7 950 Bloomfield D0  @ 4.21

      EVGA 4 Way Classified  Bios.82

      Corsair Ram CMT6GX3M3A2000C8  12 GB total @ 8-9-8-24-88 2T 2000 mhz

      Corsair AX 1200 PSU

      EVGA GTX 570 HD 3x

      Sound Blaster X-Fi fatality pci-e

      Intel X -25 M 80 GB   4x in Raid 0 mode

       

       

      Cpu is water cooled along with my motherboards NB,SB and Mosfet. Not sure what could be the bottleneck

        • 1. Re: Four Intel X- 25 M  80 GB Raid 0 performance
          DuckieHo

          The ICH10R peaks at aroun 650-750MB/s sequential reads so the RAID controller is the bottleneck.  You might be able to squeeze higher synthenic numbers if you use deeper queue depths and large fliles.

           

          However, this is actually great for an onboard controller.  If you want more sequential throughput, you will need to invest in a discrete hardware RAID controller ($150+).

          • 2. Re: Four Intel X- 25 M  80 GB Raid 0 performance
            parsec

            Why do you think you should be seeing over 800 MB/s read speeds?  What is that figure based on or how is it calculated?

            • 3. Re: Four Intel X- 25 M  80 GB Raid 0 performance
              DuckieHo

              Probably 250MB/s sequential read for each drive times 4... then minus some for imperfect scaling.

              • 4. Re: Four Intel X- 25 M  80 GB Raid 0 performance
                parsec

                Hi Duckie,  Yes, that is one obvious but IMO rather simplistic method of determining what the result "should" be.  Things are rarely that simple and the entire system must be taken into account.  As you mentioned, there is a limit to what the SATA controller can provide.  I've never seen the figure you mentioned in any of the ICH10 documents, I'm not questioning it and might have missed it.  I wonder if differences in the RAID driver and its settings would make any difference.

                • 5. Re: Four Intel X- 25 M  80 GB Raid 0 performance
                  Certified

                  Hello and thank you for the replies, I am using the most recent updated drivers for ICH10 raid controller and only option I have toggled is

                  Write Back Cache : Enabled  in my Intel Rapid Storage Technology application. Is there any other setting I should look in to ?

                   

                  Here is a screenshot of HD Tune Pro stats.

                   

                  Untitled.jpg

                   

                  Intel X25-M SSDSA2MH080G2K5 2.5" 80GB SATA II MLC Internal Solid State Drive  ( 4X )
                  Sequential Access - Read  up to 250 Mb/s on each drive
                  Forgot to mention I am also using latest firmware for each ssd drive. On a side note which raid controller would you recommend ?
                  • 6. Re: Four Intel X- 25 M  80 GB Raid 0 performance
                    DuckieHo

                    Parsec, I am not sure if Intel prints the peak bandwidth of the ICH10R anywhere.  However, I have seen that 600-700MB/s bottleneck occur on multiple benchmarks over the years.

                     

                     

                     

                    Certified, I can really make direct recommendations.  However, you would be looking at server hardware RAID controllers with dedicated RAM and CPU.  The newer models specifically have support for SSDs.  Note that RAID0 provides sequential performance gains.for the most part.  Your random performance is probably about the same.  Unless you have specific workloads that do large (1GB+) sequential read/writes, the benefit is questionable.