The Best Solution to build a Redundant SAN


Renowned Member
Nov 18, 2011
What do you recommend for a ZFS redundant two-node SAN?
I Will use ISCSI to connect it to proxmox.
My Storage configuration should support from 80 to 160 Tb of storage space.
What do you recommend for a ZFS redundant two-node SAN?

That is a very good question. There is this project, but I haven't tried that. I read about some vendors selling ZFS HA, but I haven't tried that either.

The problem is that HA is not a part of the ZFS stack, which is very unfortunate. All solutions grown around this issue are more or less of the same approach: If it fails on one node, mount on the other node and expose from there.

In every setup I ever encountered, the solution was in the end a commercial project that does HA already, but misses ZFS of course.
What do you recommend for a ZFS redundant two-node SAN?

Does it have to be ZFS? Can't you use Ceph with only 2 copies of the files?

For ZFS I would setup Replication every 5 minutes so when one node fails you will start on the other node with the 5 min old data.

Do you plan to have the 3rd node on a small device do that you can establish quorum to avoid split brain situations?


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