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by prakashsurya 4276 days ago
Yes, I run ZFS on Linux on my single drive laptop currently.

ZFS doesn't _need_ multiple drives to work well, but it is capable of using them if they're available. One can also run a HW raid solution underneath ZFS, where the RAID engine just presents ZFS with a small number of LUNs. It's all up to the admin; and what sort of performance, redundancy, and maintenance guarantees are required.