Creating RAID 5 (Striping with Distributed Parity) in Linux – Part 4

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Babin Lonston

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7 Responses

  1. Steven G says:

    At least in my 16.04.3 LTS Ubuntu (Xenial) – config files in /etc/mdadm/mdadm.conf – not sure if the references to /etc/mdadm/mdadm.conf are correct at different versions/distros. This appears a few places above.

    Otherwise, this article was great and very helpful

    Thank you

  2. Kira~ says:

    Wouldn’t it be better to add the raid array to fstab via UUID?

  3. mohsin says:

    did this on an Arch Linux setup and it worked flawlessly

  4. ludvig says:

    that cat etc/mdadm.conf it always says no such file or directory

  5. If you are using this setup with drives that are > 2TB you cannot use fdisk, you must use parted to create the partitions. Everything else can be the same, however.

  6. Richard Teusch says:

    Read errors is the serious issue with RAID.
    If the disk fails, the RAID will have to read all the disks that remain in the RAID group to rebuild.
    A read error during the rebuild will cause data loss since we need to read all other disks during rebuild.

    SATA disks experience read failure once every 12,5 TB of read operations, that means if the data on the surviving disks totals 12.5TB, the rebuild is certain to fail.

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