On 11/15/05 11:07 AM, "James Mello" <[EMAIL PROTECTED]> wrote:
Unless there was a way to guarantee consistency, it would be hard at
best to make this work. Convergence on large data sets across boxes is
non-trivial, and diffing databases is difficult at best. Unless there
was some form of automated way to ensure consistency, going 8 ways into
separate boxes is *very* hard. I do suppose that if you have fancy
storage (EMC, Hitachi) you could do BCV or Shadow copies. But in terms
of commodity stuff, I'd have to agree with Merlin.
It’s a matter of good software that handles the distribution / parallel query optimization / distributed transactions and management features. Combine that with a gigabit ethernet switch and it works – we routinely get 50x speedup over SMP on OLAP / Decision Support workloads.