On 01/10/2014 02:57 PM, Stephen Frost wrote:

    Yes, if you have a BBU that memory is authoritative in most cases. But
    in that case the argument of having two disks is pretty much pointless,
    the SPOF suddenly became the battery + ram.

If that is a concern then use multiple controllers. Certainly not
unheard of- look at SANs...

And in PostgreSQL we obviously have the option of having a third or fourth standby but that isn't the problem we are trying to solve.


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