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22TB of total capacity is interesting because we're now getting >26TB on single drives:

* https://www.techradar.com/news/larger-than-30tb-hard-drives-...

Crazy.



Yes but there’s a price/reliability/performance trade off. Also, with disks that big failures become qualitatively different. For example, when a disk fails in a mirror, the bigger the disk size the higher the chance the 2nd disk will have unreadable blocks.


This is what ZFS scrubbing is for. If a drive develops unreadable sectors, ZFS will alert you.


If the drives are in a RAID ZFS will not only alert you but fix the corruption from parity on other disks.




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