btrfs drive replacement - eviltoast

Referencing: https://lemmy.world/post/17588348

I want to make a NAS with a 500GB boot drive and 2x16TB HDDs. Based on my previous post, btrfs is a good option. It also looks easy to get started. My plan for the NAS would be to purchase several 16TB drives, and only use 2 of them.

My first question is about different drives. Could I purchase two different brand drives and use them with btrfs? (I assume yes)

2nd question: how does the replacement process go? Like if drive A died, so I remove it, and put a brand new replacement in. What do I have to do with btrfs to get the raid 1 back going? Any links or guides would be amazing.

  • mal3oon@lemmy.worldEnglish
    1·
    4 months ago

    if you buy two identical drives (at the same time), the likelyhood of both drives failing around the same time is severely higher.

    I need sources, this sounds extremely unlikely. That’s basically 2 "independent” probabilities.

    • tobogganablaze@lemmus.orgEnglish
      2·
      4 months ago

      The reasoning is that drives are produced and shipped in batches and if you order multiple at onces there is a higher chance you’ll get drives from the same batch. If that batch had some fault during production or it was damaged during shipping, all your drives might be affected.

      I don’t have a source, but it’s something multiple expirenced people have mentioned to me.