[@_ck_ Participant 15 years, 4 months ago]

Glad to see what I am saying confirmed with independent realword proof.

BTW, just how big is your site that you require multiple db servers?

I don’t know of a single WordPress+bbPress install, other than Automattic’s that are using multiple db servers.

(unless of course you are running other apps that have heavy db use or maybe for backup replication)