4 Replies Latest reply on Sep 6, 2018 2:51 PM by Intel Corporation

    Poor write performance in RAID 5 configuration

    sharam55

      I configured 5 2TB Seagate SATA disks using the Intel Rapid Storage Technology in a RAID 5 configuration.

       

       

      I am pleased with the Read performance but the write performance is very poor. Seagate Specs. show 210 MB/s max sustained transfer rate on a single disk. I realize there is some overhead with the RAID 5 configuration but 31.85 MB/s sequential write is too low.

       

       

      Does anyone know how to improve the write performance of my RAID 5 array.

       

       

      Thank you for your assistance.

       

       

      Benchmark results:

       

       

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

      CrystalDiskMark 6.0.1 x64 (UWP) (C) 2007-2018 hiyohiyo

                                Crystal Dew World : https://crystalmark.info/

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

      * MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]

      * KB = 1000 bytes, KiB = 1024 bytes

       

       

         Sequential Read (Q= 32,T= 1) :   751.966 MB/s

        Sequential Write (Q= 32,T= 1) :    31.850 MB/s

        Random Read 4KiB (Q=  8,T= 8) :     8.338 MB/s [   2035.6 IOPS]

      Random Write 4KiB (Q=  8,T= 8) :     2.071 MB/s [    505.6 IOPS]

        Random Read 4KiB (Q= 32,T= 1) :     7.498 MB/s [   1830.6 IOPS]

      Random Write 4KiB (Q= 32,T= 1) :     1.466 MB/s [    357.9 IOPS]

        Random Read 4KiB (Q=  1,T= 1) :     1.383 MB/s [    337.6 IOPS]

      Random Write 4KiB (Q=  1,T= 1) :     1.321 MB/s [    322.5 IOPS]

       

       

        Test : 1024 MiB [D: 0.0% (0.7/7452.0 GiB)] (x5)  [Interval=5 sec]

        Date : 2018/08/26 17:35:29

          OS : Windows 10 Professional [10.0 Build 17134] (x64)

       

       

      System Information:

       

       

      OS name:  Microsoft Windows 10 Pro

      OS version:  10.0.17134

      Processor:  GenuineIntel Intel64 Family 6 Model 158 Stepping 10 3.696  GHz

      BIOS:  American Megatrends Inc., 1602

      PCH: 0xA2C9

       

       

      Intel® Rapid Storage Technology enterprise Information

      Kit installed:  16.0.2.1086

      User interface version:  16.0.2.1086

      Language:  English (United States)

      RAID option ROM version:  16.0.2.3402

      Driver version:  16.0.2.1086

      ISDI version:  16.0.2.1086

       

       

      Storage System Information

       

       

      RAID Configuration:

       

       

      Array Name:  SATA_Array_0000

      Size:  9,538,644 MB

      Available space:  9 MB

      Number of volumes:  1

      Volume member:  RAID5

      Number of array disks:  5

      Array disk:  Z4ZBPG4Q

      Array disk:  Z4ZBKW1K

      Array disk:  Z4ZBQ351

      Array disk:  Z4ZBWYCL

      Array disk:  Z4ZBPF6K

      Disk data cache:  Enabled

       

       

      Volume name:  RAID5

      Status:  Normal

      Type:  RAID 5

      Size:  7,630,907 MB

      System volume:  No

      Data stripe size:  128 KB

      Write-back cache:  Write back

      Initialized:  Yes 

      Parity errors:  0

      Blocks with media errors:  0

      Physical sector size:  4096 Bytes

      Logical sector size:  512 Bytes

       

       

      Hardware Information:

       

       

      Controller name:  Intel(R) Chipset SATA/PCIe RST Premium Controller \\Scsi1

      Type:  SATA

      Mode:  RAID

      Number of SATA ports:  6

      Number of volumes:  1

      Volume:  RAID5

      Number of spares:  0

      Number of available disks:  1

      Rebuild on Hot Plug:  Disabled

      Manufacturer:  Intel Corporation

      Model number:  0x2822

      Product revision:  0

      Direct attached disk:  Z4ZBPG4Q

      Direct attached disk:  Z4ZBKW1K

      Direct attached disk:  Z4ZBQ351

      Direct attached disk:  S3Z8NB0K535996Y

      Direct attached disk:  Z4ZBWYCL

      Direct attached disk:  Z4ZBPF6K

       

       

       

       

      Disk on Controller 0, (Used 5 identical 2TB disks in the RAID 5 configuration)

      Status:  Normal

      Type:  SATA disk

      Location type:  Internal

      Usage:  Array disk

      Size:  1,863 GB

      System disk:  No

      Disk data cache:  Enabled

      Command queuing:  NCQ

      Transfer rate: 6 Gb/s

      Model:  ST2000DM006-2DM164                     

      SCSI device ID:  0

      Firmware:  CC26   

      Physical sector size:  4096 Bytes

      Logical sector size:  512 Bytes

       

       

      Disk on Controller 0, Port 3 (Samsung SSD disk for OS)

      Status:  Normal

      Type:  SATA SSD

      Location type:  Internal

      Usage:  Available

      Size:  932 GB

      System disk:  Yes 

      Disk data cache:  Enabled

      Command queuing:  NCQ

      Transfer rate: 6 Gb/s

      Model:  Samsung SSD 860 EVO 1TB                

      Serial number:  S3Z8NB0K535996Y

      SCSI device ID:  0

      Firmware:  RVT01B6Q

      Physical sector size:  512 Bytes

      Logical sector size:  512 Bytes

       

       

      The rest of the hardware configuration:

       

       

      CPU: Intel - Core i7-8700K 3.7GHz 6-Core Processor

      CPU Cooler: Cooler Master - Hyper 212 LED Turbo (Red) 66.3 CFM CPU Cooler

      Motherboard: Asus - ROG MAXIMUS X HERO (WI-FI AC) ATX LGA1151 Motherboard

      Memory Corsair - Vengeance RGB 32GB (2 x 16GB) DDR4-3000 Memory

      Storage SSD Samsung - 860 Evo 1TB 2.5" Solid State Drive

      Storage SATA (RAID 5) 5 Seagate - Barracuda 2TB 3.5" 7200RPM Internal Hard Drive

      Video Card Asus - GeForce GTX 1070 8GB Video Card

      Case Cooler Master - MasterCase Pro 5 ATX Mid Tower Case

      Power Supply Corsair - 850W 80+ Platinum Certified Fully-Modular ATX Power Supply

      Optical Drive Asus - DRW-24B1ST/BLK/B/AS DVD/CD Writer

      SATA PCIe Card Vantec 2 Channel 4-Port SATA 6Gbps PCIe Host Card (UGT-ST622)

        • 1. Re: Poor write performance in RAID 5 configuration
          Intel Corporation
          This message was posted on behalf of Intel Corporation

          Hello sharam55,

          I understand that you are currently experiencing bad writing performance with the newly created RAID 5. 

          Regarding this, I would like to start by letting you know that Intel ® Rapid Storage Technology allows you to create and manage RAID. However, it does not affect the performance of the writing or reading speeds of the drives, this is something that is affected by either the SATA controller or the drives themselves. 

          What we can try now, in order to tell and be sure, is to remove the Intel ® Rapid Storage Technology from your system. Your RAID 5 will remain created, after that, you can move a file from a non-RAID drive (External or internal) and check the writing speed shown at the moment of actually moving a file. 

          If you could take a screenshot and attach it would be great.


          Regards,
          David V

          • 2. Re: Poor write performance in RAID 5 configuration
            sharam55

            Hello David,

             

            Thank you for your response.

             

            I created the RAID 5 array using Intel Rapid Storage Technology in UEFI BIOS. Next, I loaded Windows 10 without installing IRST. I checked disk i/o performance and it was poor. Then I loaded IRST device drivers and software. The write performance remained poor.

             

            I think IRST is in two places, in the BIOS during the RAID setup and in the OS for managing the disk array.  I may be wrong on this.

             

            I will be happy to include screenshots. But I am not sure of what?

             

            Thanks,

             

            Sharam

            • 3. Re: Poor write performance in RAID 5 configuration
              Intel Corporation
              This message was posted on behalf of Intel Corporation

              Hello sharam55,

              Thank you for your response.

              That is correct, however, the Intel ® Rapid Storage Technology only helps you create and manage the RAID but it does not affect the performance. Please try to move a file from the SSD (For example) or any other drive (internal or external) to the RAID and see how long it takes to transfer to make sure that the transfer rate is not affected.  

              As mentioned before, this performance problem is possibly happening because of a problem with the SATA controller or in this case a faulty or defective drive that may be affecting the overall performance of the RAID. 


              Regards,
              David V

              • 4. Re: Poor write performance in RAID 5 configuration
                Intel Corporation
                This message was posted on behalf of Intel Corporation

                Hello sharam55,

                I am following up with your case and see that we have not heard back from you.

                Were you able to test the transfer speed? 

                If you need more assistance do not hesitate to reply.


                Regards,
                David V