ZFS High-Availability NAS

The ZFS filesystem has been a game-changer in the way I approach local data storage, shared storage, replication and general data backup and protection.

I’ve been a long-time proponent of ZFS storage in a variety of scenarios, going back to my first experiments with OpenSolaris in 2008, buying my own ZFS Thumper/Thor in 2009, adopting ZFS on Linux for production use in 2012, and through my continued contributions to StackExchange|ServerFault.

ZFS Advantages:

More intelligent storage for application servers and a serious replacement for LVM.
Great shared storage options to back virtualization environments.
Useful for expandable backup targets.
Atomic snapshots.
Flexible replication.
Transparent filesystem compression.
ZFS Downsides:

Good ZFS implementations sometimes require specialized knowledge.
It’s easy to make bad or irreversible mistakes. (often due to poor design or inappropriate hardware choices).
There’s lots of contradictory ZFS information online due to ZFS’s appeal to “home lab” users.
Options for high availability are either costly, tightly associated with commercial storage solutions or


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