Hi, I am in the stage of planning of the deployment of Exchange in the my company network, i could do with some help in identifying if a proposed solution will work before I submit it for evaluation, we have two sites connected by a Les Circuit, is it possible to have active replication clustering over a Les Cirucit for the mail box servers, so that if one sites should fail they could would be transfered to the other server. Is it possible to have more than one Edge server connected to a Hub Transport Server via Edge subscription links,Is it possible to cluster the Hub transport servers, or do they need to be seperateI would be very greatfull if anybody could provide me with an answer to these questions.

You can use CCR for replication mailboxinfo.This may not always be the best choise. In SP1 of Exchange 2007 you can also use SCR. HUB servers cannot be clustered, deploy multiple of them and they will also load balance traffic. Then you can also subscribe one Edge to one HUB

Hi, thanks for the advice, answered the questions we needed to know,