How to recover RAID 5 disks if Motherboard or SATA PCIe Adapter dies

  • Hypothetical Scenario:


    If my OMV6 server motherboard and or SATA PCIe adapters die and are replaced, will the OMV automatically recognize the RAID 5 drives? Or do I lose everything? Why do I ask? Windows 10 will automatically recognize striping disks and/or mirror drive sets and ask you if you want to recover or add them to the new system. Windows makes it easy to discover RAID setup and associated disks. I'm worried about hardware dying and not being able to recover quickly my RAID 5 and associated 3 disks.


    Please advise.


    Rob

  • Raid is not a backup remember that. I would avoid raid at all costs.

    If You replace the gear with the same OMV boot drive all will be well (other than raid cards)


    If a drives dies omv will say on the raid page its dead. Than you will have to risk all the data to remove the old drive add the new drive resync the whole thing and hope all is well at the end.

    When I say risk I mean if anything happens to the other drives when you are doing the above its gone all gone.


    I would worry more about the drives than hardware.


    see my link in the sig about raid.

    • Official Post

    If the raid has been created by software (case of any Raid created in OMV) there will be no problem. Any different system should be able to recognize that Raid.

    The problem arises if you have created the Raid by hardware, for example in the server bios. In that case the Raid is linked to that hardware. If the hardware dies you need equivalent hardware to recover that Raid.

  • Sorry for the late response. Thank you. I will take a look and your advice is solid. ~Rob

  • If the raid has been created by software (case of any Raid created in OMV) there will be no problem. Any different system should be able to recognize that Raid.

    The problem arises if you have created the Raid by hardware, for example in the server bios. In that case the Raid is linked to that hardware. If the hardware dies you need equivalent hardware to recover that Raid.

    Good point. I used the OMV 6 native RAID solution. I just created another thread similar to this one. I used the same HW on a test bed to mess with different scenarios to test what I can and can't do to my satisfaction since getting answers has been spotty at best. I guess that is how it is with free solutions.


    The 3 WD Hard Drives where from another RAID 5 set on completely different HW. Amazingly, OMV recognized it like you indicated as the diff between HW and software based RAID solutions. Take a look at my other thread on this. I'd love to get your take and expert advice. Thanks ~Rob

  • acuity2009

    Added the Label resolved

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