9 Replies Latest reply: Feb 4, 2012 7:24 AM by JMeurisse RSS

    Poor performance on RAID-10 AFTER disk rebuild on IRST

    JMeurisse

      Hi all,

       

      I have been using a RAID-10 array since a couple of months and it worked nicely (Read speed  was about 168MB/s) until recently.

       

      When I switched on the computer, the array status was REBUILDING. It took about 24 hours to get it done and got back the "NORMAL" status. However, despite the fact all seems to be OK from the Intel monitoring dashboard, the array performances are now dramatically poor (average READ speed of the array is 1.6MB/s) and it is practically unusable although all my data are available.

       

      1) How can I troubleshoot the cause of the issue since all seems to be OK from the Intel monitoring dashboard? Are there any logs somewhere?

      2) Do you think this is a hardware or software issue?

      3) Is it possible to "break" the RAID to test the speed of my disks individually, but without lossing my data?

       

      Thanks a lot in advance for your help!

       

      -------------------------------------

      Here below my configuration :

       

      Mother Board: Asus P8P67


      System Report
      System Information
      OS name:  Microsoft Windows 7 Édition Intégrale
      OS version:  6.1.7601 Service Pack 1 7601
      System name:  MAMGOUDIG
      System manufacturer:  System manufacturer
      System model:  System Product Name
      Processor:  GenuineIntel Intel64 Family 6 Model 42 Stepping 7 3,301  GHz
      BIOS:  American Megatrends Inc., 1704

      Intel® Rapid Storage Technology
      Kit installed:  10.6.0.1002
      User interface version:  10.6.0.1002
      Language:  English (United States)
      Intel RAID controller:  Intel(R) Desktop/Workstation/Server Express Chipset SATA RAID Controller
      Number of SATA ports:  5
      RAID option ROM version:  10.5.0.1034
      Driver version:  10.6.0.1002
      ISDI version:  10.6.0.1002

      Device Information
      Name:  Array_0000
      Size:  2.3 TB
      Available space:  0 GB
      Disk data cache:  Enabled
      Number of volumes:  1
      Volume member:  Secure
      Number of disks:  4
      Array disk:  WD-WCATR0445882
      Array disk:  WD-WCATR0447039
      Array disk:  WD-WCASYA737770
      Array disk:  WD-WCASYA791155

      Name:  Secure
      Status:  Normal
      Type:  RAID 10
      Size:  1.2 TB
      Data stripe size:  64 KB
      Write-back cache:  Enabled
      System volume:  No
      Initialized:  Yes 
      Verification errors found:  0
      Blocks with media errors:  0
      Physical sector size:  512 Bytes
      Logical sector size:  512 Bytes
      Parent array:  Array_0000
      Number of disks:  4
      Array disk:  WD-WCATR0445882
      Array disk:  WD-WCATR0447039
      Array disk:  WD-WCASYA737770
      Array disk:  WD-WCASYA791155

      Disk on port 0
      Port location:  Internal
      Status:  Normal
      Type:  Hard disk
      Usage:  Available
      Size:  298 GB
      Serial number:  S0MQJDWQ100907
      Model:  SAMSUNG HD321KJ
      Firmware:  CP100-12
      System disk:  Yes 
      Password protected:  No
      Disk data cache:  Enabled
      Native command queuing:  Yes 
      SATA transfer rate:  1.5 Gb/s
      Physical sector size:  512 Bytes
      Logical sector size:  512 Bytes

      Disk on port 2
      Port location:  Internal
      Status:  Normal
      Type:  Hard disk
      Usage:  Array disk
      Size:  596 GB
      Serial number:  WD-WCATR0445882
      Model:  WDC WD6400AAKS-00E4A0
      Firmware:  05.01D05
      System disk:  No
      Password protected:  No
      Disk data cache:  Enabled
      Native command queuing:  Yes 
      SATA transfer rate:  3 Gb/s
      Physical sector size:  512 Bytes
      Logical sector size:  512 Bytes

      Disk on port 3
      Port location:  Internal
      Status:  Normal
      Type:  Hard disk
      Usage:  Array disk
      Size:  596 GB
      Serial number:  WD-WCATR0447039
      Model:  WDC WD6400AAKS-00E4A0
      Firmware:  05.01D05
      System disk:  No
      Password protected:  No
      Disk data cache:  Enabled
      Native command queuing:  Yes 
      SATA transfer rate:  3 Gb/s
      Physical sector size:  512 Bytes
      Logical sector size:  512 Bytes

      Disk on port 4
      Port location:  Internal
      Status:  Normal
      Type:  Hard disk
      Usage:  Array disk
      Size:  596 GB
      Serial number:  WD-WCASYA737770
      Model:  WDC WD6400AAKS-22A7B2
      Firmware:  01.03B01
      System disk:  No
      Password protected:  No
      Disk data cache:  Enabled
      Native command queuing:  Yes 
      SATA transfer rate:  3 Gb/s
      Physical sector size:  512 Bytes
      Logical sector size:  512 Bytes

      Disk on port 5
      Port location:  Internal
      Status:  Normal
      Type:  Hard disk
      Usage:  Array disk
      Size:  596 GB
      Serial number:  WD-WCASYA791155
      Model:  WDC WD6400AAKS-22A7B2
      Firmware:  01.03B01
      System disk:  No
      Password protected:  No
      Disk data cache:  Enabled
      Native command queuing:  Yes 
      SATA transfer rate:  3 Gb/s
      Physical sector size:  512 Bytes
      Logical sector size:  512 Bytes
        • 1. Re: Poor performance on RAID-10 AFTER disk rebuild on IRST
          allan_intel

          Hi there!

           

          If you reset disk to Non-Raid, the information on a RAID 10 volume will not be accessible. You can break a mirror configuration without losing information but it does not happen on RAID 10

           

          The fact that read speed decreased, it could be considered as hardware issue.

           

          When you have Intel® Rapid Storage installed on the computer, the only log available is the system report generated within rapid storage software.

           

          Thanks

           

          Allan

          • 2. Re: Poor performance on RAID-10 AFTER disk rebuild on IRST
            JMeurisse

            Hi Allan

             

            Thanks for your post back!

             

            I understand my data won't be accessible if I set the disks to "non RAID", but will they be accessible back again once I will set them back to "RAID10"?

            My idea would be to unpair the disks, test them individually, identify the faulty unit, reconfigure the RAID10 back again (and get back access to my data), and then replace the faulty unit through the standard procedure.

             

            Would this work, or what else would you suggest to identify the faulty disk, so that I can replace it?

             

            Thanks,

             

            JMeurisse.

            • 3. Re: Poor performance on RAID-10 AFTER disk rebuild on IRST
              JMeurisse

              Hi Allan,

               

              Any feedback to my problem?

               

              Thanks a lot in advance and have a nice day!

               

              JMeurisse

              • 4. Re: Poor performance on RAID-10 AFTER disk rebuild on IRST
                JMeurisse

                Hi all, any help on this topic please?

                 

                Really I'm stuck in the middle of nowhere, and any help would be much appreciated!

                 

                JMeurisse

                • 5. Re: Poor performance on RAID-10 AFTER disk rebuild on IRST
                  r3z0nate

                  I would be careful and backup anything that might be important if possible. I had 4 WD Raptors in a RAID 1 on my older ASUS A8N-SLI board and didn't have any problems for years. Then I upgraded to a ASUS P6T-SE with the Intel ICH10R, setup two arrays - a RAID 0 for the OS only and a RAID 10 for all the files I thought I would never loose.

                   

                  After replacing a drive, rebuilding both arrays, I had accidently booted with a cable disconnected on another drive and have lost absolutely everything.

                  All of the recovery software that I've tried will only locate the RAID 0 array which is pointless because those files are corrupt anyway.

                   

                  I can't say you won't loose any data, but you shouldn't as I've taken drives out and looked at them and gone from RAID to Sata on my board

                  • 6. Re: Poor performance on RAID-10 AFTER disk rebuild on IRST
                    JMeurisse

                    Thanks a lot for your help r3zOnate. Definitely I need to buy a new disk to backup my data before any further trials...

                    • 7. Re: Poor performance on RAID-10 AFTER disk rebuild on IRST
                      r3z0nate

                      No problem. Let me know if you have any success in recovering your data.

                       

                      I'm close to risking this myself.

                      • 8. Re: Poor performance on RAID-10 AFTER disk rebuild on IRST
                        JMeurisse

                        Hi there

                         

                        I have finally fixed my issue. Here is the way I did, so that other people in my case can benefit from my learnings

                         

                        1. Disabled RAID in the BIOS and started Windows
                        2. Windows now sees 4 hard drives. The OS proposes you to format them in order to be usable; of course dont do that and ignore this proposal.
                        3. Ran HD Tune and identified the faulty disk (1,2MB/s !!! ).
                        WD-WCATR0445882-(Ancien)-28-janvier-2012_18-02.png
                        1. Shut down the PC, unplugged (both power and sata) the faulty disk, reactivate the RAID mode in the BIOS
                        2. Rebooted. RAID10 volume was up and running, with a "DEGRADED" status... of course!
                        3. Made the RMA to Western Digital and waited to receive my new disk.
                        4. Installed the new disk, plugged Power and SATA.
                        5. Booted Windows. New unit is not considered as a RAID member : you need to go to the Intel Rapid Storage software, select the RAID10 volume and click "Rebuild on new volume". You choose the new Hard drive.
                        6. It took about 140 min to reconstruct the RAID10 of 4 * 640Gb.
                        7. The RAID10 volume is now up, healty, and running!
                        8. See HD Tune result of the RAID10 volume:

                         

                        Nouveau-Raid--Disque-Donnees-04-f_vrier-2012_14-52.png

                         

                        Hope this helps!

                        • 9. Re: Poor performance on RAID-10 AFTER disk rebuild on IRST
                          JMeurisse

                          Solved the issue by myself, but shared the receipee with others