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It’s not as clear cut as this. Raid6 on how many disks? raid6/zraid2 with 6 disks total might be fine, but 20 disks is not. One of the more common scenarios wi

• Dylan16807 3y ago
  > Raid6 on how many disks? The same number of disks as you were using when the disks were smaller. I'm comparing like-for-like except disk size. > One of the more common scenarios with consumer grade hardware is a degraded array getting completely lost while being rebuilt. Which is why I mentioned regular testing. If your disks are on the verge of death it doesn't matter how much parity you have or how big they are, a rebuild has too much chance of failure. You need to make sure they can handle a moderately heavy load. But if you're putting them under that load regularly, a rebuild is very unlikely to be the last straw for multiple drives.