Best practice for high availability ZFS pool

[Palle Girgensohn]

Hi,

We need to set up a ZFS pool with redundance. The main goal is high availability - uptime.

I can see a few of paths to follow.

1. HAST + ZFS

2. Some sort of shared storage, two machines sharing a JBOD box.

3. ZFS replication (zfs snapshot + zfs send | ssh | zfs receive)

4. using something else than ZFS, even a different OS if required.

My main concern with HAST+ZFS is performance. Google offer some insights here, I find mainly unsolved problems. Please share any success stories or other experiences.

Shared storage still has a single point of failure, the JBOD box. Apart from that, is there even any support for the kind of storage PCI cards that support dual head for a storage box? I cannot find any.

We are running with ZFS replication today, but it is just too slow for the amount of data.

We prefer to keep ZFS as we already have a rather big (~30 TB) pool and also tools, scripts, backup all is using ZFS, but if there is no solution using ZFS, we're open to alternatives. Nexenta springs to mind, but I believe it is using shared storage for redundance, so it does have single points of failure?

Any other suggestions? Please share your experience. :)

Palle

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