I've been searching for awhile trying to determine if there is a recommend mailbox database size recommendation. I know in 2003 the recommendation was 100 GB and in 2007 in a CRC environment it was 200 GB. In 2010 the max database size is 2 TB when deployed in a DAG environment with 2 passive copies. What is the recommendation in a non DAG environment?
What are the recommendations if any for 2010 in a DAG environment? Is it basically it depends based on recoverabilty objectives such as how long it would take to ressed a copy, how long to apply logs to a newly activated copy, etc up to 2 TB. I've been in environments where we have 1 TB databases and others where we didn't want to exceed 400 or 500 GB.