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    Raid 10 + wd red (cmr not smr)

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    • P
      pattonb
      last edited by

      I have a raid 10 backup sever, and one of the 4tb drives died ( allegedly). So i replaced it
      with anew 4 tb wd red ( as stated in the subject a cmr not the smr drive). The raid card, LSI 9750 8i
      did not see/recognize it. I doubled checked everything , power cable sata cable etc. no go. I had a 4 tb wd gold
      drive, that I have and put it in. No problem, the rebuild resumed as I would expect.
      any ideas ?

      1 Reply Last reply Reply Quote 0
      • scottalanmillerS
        scottalanmiller
        last edited by

        There are many possible reasons, often involving firmware. But there's one reason more likely than any other... 4TB is not 4Tb and any replacement drive must be absolutely identical in size, or larger. Not "almost" the same size but a byte or two short. There's every possibility that the 4TB Red is just the tiniest bit smaller than whatever you had in there previously and the Gold is as big or bigger.

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        • P
          pattonb
          last edited by pattonb

          interesting old drive model # WD40EFRX new/replacement drive# WD40EFRX

          hmmm. and the other drives in the array are all WD40EFRX

          scottalanmillerS 1 Reply Last reply Reply Quote 0
          • scottalanmillerS
            scottalanmiller @pattonb
            last edited by

            @pattonb said in Raid 10 + wd red (cmr not smr):

            WD40EFRX

            Oh, it was a match? Have you tested the drive on its own somewhere, then? Maybe the drive is just bad or needs a firmware update?

            P 1 Reply Last reply Reply Quote 1
            • P
              pattonb @scottalanmiller
              last edited by

              @scottalanmiller I did attach the drive to a windows machine, and was recognized immediately.
              The raid card 9750 is up to date as well, with the latest firmware

              scottalanmillerS 1 Reply Last reply Reply Quote 0
              • scottalanmillerS
                scottalanmiller @pattonb
                last edited by

                @pattonb said in Raid 10 + wd red (cmr not smr):

                @scottalanmiller I did attach the drive to a windows machine, and was recognized immediately.
                The raid card 9750 is up to date as well, with the latest firmware

                I meant the firmware on the drive itself.

                P 1 Reply Last reply Reply Quote 0
                • P
                  pattonb @scottalanmiller
                  last edited by

                  @scottalanmiller I thought so, i thought I would add that bit about the controller. I couldn't find
                  any firmware available at all on the wd site. the new drive shows a date of 01 Nov. 2020
                  I have another lsi 9750 4i , so I may put that in another pc and see if I get the same result.

                  1 Reply Last reply Reply Quote 1
                  • 1
                    1337
                    last edited by 1337

                    Hmm, unrelated to the problem but this is one of the reasons I very much prefer software raid over hardware.

                    For testing I suggest plugging in the drive into sata directly. No raid controller.
                    If the drive isn't recognized it's broken, DOA.

                    1 1 Reply Last reply Reply Quote 0
                    • 1
                      1337 @1337
                      last edited by

                      @Pete-S said in Raid 10 + wd red (cmr not smr):

                      Hmm, unrelated to the problem but this is one of the reasons I very much prefer software raid over hardware.

                      For testing I suggest plugging in the drive into sata directly. No raid controller.
                      If the drive isn't recognized it's broken, DOA.

                      I believe that drive is actually broken.
                      Even if you had a different sized drive it should still be visible because it could be used to configure a second array.

                      P 1 Reply Last reply Reply Quote 0
                      • P
                        pattonb @1337
                        last edited by

                        @Pete-S as mentioned earlier in this thread, attached to a windows pc, and performs as one would expect.
                        even ran some of Western Digital's tools (data life guard) on the drive, no issues.

                        DustinB3403D 1 Reply Last reply Reply Quote 1
                        • DustinB3403D
                          DustinB3403 @pattonb
                          last edited by

                          @pattonb have you zero'd the drive so it's like new? I've seen raid controllers act funny if any partitions etc exist on "new drives".

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                          • P
                            pattonb @DustinB3403
                            last edited by

                            @DustinB3403 I have my doubts about that with this controller. I have used a variety of LSI/3ware controllers
                            over the years, and have never experienced that, in fact have attached previously used formatted hard drives sans issue. nonetheless, the hard drive was new (straight out of the bag). I will test with
                            another lsi raid controller and see, thanks

                            1 Reply Last reply Reply Quote 0
                            • DashrenderD
                              Dashrender
                              last edited by

                              Here's another thought - is the LSI firmware updated? any possibility old firmware doesn't talk to the new drive? I mean really this shouldn't be an issue, but I've seen issues like this in the past between equipment, but not RAID controllers.

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                              • P
                                pattonb @Dashrender
                                last edited by

                                @Dashrender clearly stated earlier in the thread, 'raid controller firmware is current'

                                this is from the both drives, (alleged failed drive & new drive) after attaching to external usb device on the same server, using "parted"

                                Model: WDC WD40 EFRX-68N32N0 (scsi)
Disk /dev/sdd: 4001GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number  Start   End     Size    File system  Name                          Flags
 1      17.4kB  16.8MB  16.8MB               Microsoft reserved partition  msftres
 2      16.8MB  4001GB  4001GB  ntfs         Basic data partition          msftdata


Error: /dev/sdd: unrecognised disk label
Model: WDC WD40 EFRX-68N32N0 (scsi)                                       
Disk /dev/sdd: 4001GB
Sector size (logical/physical): 512B/512B
Partition Table: unknown
                                1 Reply Last reply Reply Quote 0
                                • P
                                  pattonb
                                  last edited by

                                  the next thought is a faulty miniSAS SFF-8087 to 4x SATA cable but why would the WD gold drive work ?

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