[Discuss] easy clustering of applications

[Richard Pieri]

Bill Bogstad wrote:
>    An application that does little IO, has a high memory footprint,
> and modifies all of it between IO requests would make for very
> expensive checkpointing.   Every checkpoint could require transferring
> multiple gigabytes of modified RAM.   A CPU can dirty RAM way faster
> then all but the fastest network connections can transfer it.

This may be why most of the examples of vSphere HA clusters that I've 
seen sport large disk farms. The canonical example is NetApp's 
continuous availability configuration.

-- 
Rich P.