[zfs-discuss] ZFS on RAID-5 array

Gordan Bobic gordan.bobic at gmail.com
Thu Apr 12 16:53:37 EDT 2018

On Thu, Apr 12, 2018 at 9:45 PM, Cedric Lemarchand <yipikai7 at gmail.com>

> - cons: ZFS could be less performant and more difficult to tune than
> traditional FS (non COW)

Even that's debatable. Don't underestimate the benefits of lz4 compression
and other corners you may be able to cut elsewhere with ZFS (e.g. on MySQL
innodb_doublewrite=0, innodb_checksum_algorithm=none)

> - pros: you benefit of all the good things of ZFS: checksum, snapshots,
> clones, dataset isolation, quota, send/recv ect


> I personally don’t see any show stoppers of choosing ZFS over a RAID
> array, just don’t do any kind of RAIDZ or mirrors, only stripped vdevs.

IMO, mirrors are still useful. I still use mirror vdevs with ZFS in cloud
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