Hi, Currently I have a single Exchange 2010 SP1 server with all the roles, it's IS (information stores) are stored locally on the server, same as the logs. I have obtained another server, and Dell's powervault MD3000 to go along with it and Symantec's enterprise vault. My objectives for this "project" is to build a redundant exchange configuration. Basically I'lll be doing DAG this way or the other. Before I'm about to install Exchange 2010 SP1 on the other machine, and do all the needed configs for creating DAG, I have a few questions: 1. When creating the DAG, the IS will be replicated from one server to the other. If I want to do a "classic cluster" configuration in which the information stores will be on the storage and one server will be active and the other will be passive, how should I do me configurations form the Exchange perspective ? 2. The enterprise vault will be "deleting" emails and archiving them to the storage, so if I'll build my DAG the usual way - Two servers and each one holds a copy of the IS, am I about to have "huge" replication traffic because the vault constantly archiving ?

Hi, 1) Can't be done you can only define copy numbers, by default all database with a activation preference of 1 are active. After the other unit fails the databases with a activation preference of 2 will be activated. Each server has it's own copy of the database 2) Very hard to say it will cause some replication but how much depends on how you configure your archiving solution Regards, JohanExchange-blog: www.johanveldhuis.nl

My plan for the replication network is to connect one NIC from each server with CAT6 cable, I'm guessing it should give enough bandwidth. Could you please explain some more on how to enable Block Mode replication ? or what prerequisites should be met ?