I have 2 dedicated Exchange journaling servers with 8 journal mailboxes. I have 4 EV servers dedicated to journaling. An average day EV ingests 300,000k emails. I was wondering if anyone could explain if it would be better to have 8 vault store databases (one for each journal mailbox) or fewer? The directory and vault store databases will be on the same dedicated SQL server. If I created 8 vault store databases the load would be spread across these individual databases, in my mind improving performance. We will also be using CA and DA. Would more vault store databases help with those apps?
The next question would be, if it's recommended to have more databases, should I have multiple SQL instances? If so, one per DB? Or maybe one for the directory and one for the vault store databases?
If I missed this information in the documentation please let me know.
Thanks,
Mike Niccum