[HodGreeley]

Hod @ Couchbase here. This is inaccurate. Couchbase does not delay in writing to disk (some other dbs do). You typically want 3 nodes for high availability and failover, but it isn't required. Auto replication can also help avoid loss in many failure scenarios.

[robertjpayne]

I'd actually love to be proven wrong, Couchbase looks awesome on paper but some Couchbase staff even confirmed this with me here https://forums.couchbase.com/t/persistence-durability-guaren...

[HodGreeley]

This is complicated, because you're intertwining Sync Gateway and Couchbase Server.

Couchbase Server queues writes immediately. The default is to ack once a write is in Server memory, but you can choose other options. See the response from daschl in that thread.

I see what you were trying to get at with your question. I'm not sure we clarified enough what's going on. I'll respond on the forum.