6 Replies Latest reply on Dec 2, 2014 3:17 PM by ECBowen

    multiple disc failure in raid 0

    gallery A

      Hello all. I've a bit of a sticky issue and I wanted to know if people had had a similar experience and if i'm doing the right thing to address my problem.

       

      In my edit machine set up I have 4 x western digital black 2tb drives dedicated for my media in an internal software raid 0. They've been there for 6 months and I've been very happy with the performance. Everything on there is double backed up elsewhere, so I wasn't too stressed the other day when one of the drives failed. My Win 7 machine suddenly stopped seeing the Raid, and a quick look in disk management in windows 7 and Western Digital's own diagnostics tool showed which drive was failing. So i whipped it out, replaced with a new one, re-striped the 4 drives and transferred everything. 24 hours later another drive in the array failed. Again, one of the original drives from when I set it up six months ago.... so again i replaced it with a new WD black 2tb drive.... didn't get round to restriping until tonight, when having turned the machine on and yup, you guessed. A 3rd drive, from the original batch has now failed.

       

      I'm now getting suspicious, in line with the old saying "once is happenstance, twice coincidence, but third time is enemy action..."

       

      Could i have simply purchased a bad batch of drives originally? Is it unusual for them to go in quick succession like this? I don't want to keep spending money on drives if i'm barking up the wrong tree here? Is there anything else i should check? My motherboard is an Asus P8z68-V Pro/Gen3 and i'm running an i72600k at stock speed on it. The raid is attached to the 4 x SATA III 6g internal ports. There's a whole bunch of SSDs I use for scratch, OS/Progs, and Media Cache which work absolutely fine, including the scratch being 2 x 256gb Samsung Pro SSDs also in a Raid 0.

       

      Any advice would be greatly appreciated!

        • 1. Re: multiple disc failure in raid 0
          JEShort01 Level 4

          Drives failing naturally at the same time - highly unlikely!

           

          I would think:

          - PC got bumped really hard while drives were in use

          - other problem (motherboard, power supply, overheating, etc.)

           

          Regards,

           

          Jim

          • 2. Re: multiple disc failure in raid 0
            gallery A Level 1

            Thanks for replying Jim. I'm confident the PC hasn't been bumped or anything. There has been a noise coming from a fan ( i think) on start up recently. Haven't idenitified which one yet, it's a kind of grinding noise, which goes completely after about 20 secs. All fans seem to be working fine right now, and the CPU is running at <30C. Are there any software tools you know of to test PSU or overheating on the drives, for example? Or do i just need to strip things out and see what happens?

            • 3. Re: multiple disc failure in raid 0
              JEShort01 Level 4

              My RAID card shows all drive temperatures in a web browser, but with drives connected to your motherboard there are various different tools to view drive temperatures (speedfan, smartmontools, etc.).

               

              I start to get a bit concerned if my rotating drives are hitting in excess of 43 deg. C. If you are ever seeing 50 deg. C plus, that could be a big concern.

               

              Jim

              • 4. Re: multiple disc failure in raid 0
                gallery A Level 1

                Just reporting back on this. I put two of the supposedly 'failed' drives into an old external G-Raid caddy, and they worked perfectly, passing SMART and chkdsk tests with flying colours. Still had problems with creating the raid 0 onboard though. I bought a PSU tester and checked the PSU unit - seemed fine, then did each SATA power cable one by one. One of them was faulty (it was a 2 way splitter), replaced it and for good measure took out and reconnected all the SATA cables. Et voila, all stable and working beautifully again (so far!) Thanks Jim for pointing this hardware novice in the right direction, and I hope this tale is useful for someone else in the future.

                • 5. Re: multiple disc failure in raid 0
                  Miles4Ever Level 1

                  I often experienced this with my Windows 7 machine using the built in software RAID configuration but using a RAID 1 array. This seemed to just be something Windows did from time to time. Being RAID 1 I would just re-add the 'failed' disc and it would be happy again for a number of months. I don't believe the disc ever experienced a failure, you could mount the failed RAID 1 disc as an independent disc and it had the mirror of the data on the first disc. At the end of the day trusting Windows to do your RAID is not a reliable solution and something I would never try with RAID 0. Even a low end software based PCI-E or motherboard based RAID card will prove more reliable.

                  • 6. Re: multiple disc failure in raid 0
                    ECBowen Most Valuable Participant

                    Actually HDD's often idle 50C to 52C with the current crop of platters. That is not out of range and not an issue. The drives don't start to throttle till over 65C and become an issue at 70C. You normally add around 4C to the temp of an Idle drive for load so even at 52C idle your talking 56C at load most of the time. Failure rate is not tied to temps. It's tied to production and quality of components coupled with mechanical moving parts. HDD's have the highest failure rate out of all computer components for a reason. The old days when drives rarely failed and lasted 5 years easily are long gone.

                     

                    Eric

                    ADK