Help with adding a NEW exchange server target
Can someone who has been here before give me a high level overview of the process needed to add a new exchange server target into EV10.0.4 CHF3? I've read through several articles and posts about this but I'm having trouble tying together what needs to happen here to ensure a seamless migration.
Scenario: existing EV 10 environment that archives user mailboxes nightly out of an existing Exchange 2007 environment. Additionally, we do journal archiving every five minutes for this same Exchange 2007 environment. We are now in the "co-existance" phase of upgrading to Exchange 2013, which means all mail is flowing through the Exchange 2013 system and being proxied to the Exchange 2007 environment. Before we can start migrating mailboxes, we need to add the new exchange server as an archive target for mailboxes and configure a journal mailbox archiving task and a mailbox archiving task, that part is comfortable and clear to me for the most part. I also understand that we will definitely need to modify our provisioning times so that when we migrate a mailbox during the day, the provisioning for that user gets picked up before our next archiving window (6pm currently) What I am having trouble with is the following...
Do we utilize the same databases/mailstore/journalstore partitions as the existing environment, since we want to archive a user mailbox to the existing corresponding archive (that has already existed when their mailbox was on Exchange 2007), once they are moved to Exchange 2013... if not, then why not?
Do we utilize the existing journal store database and storage location for the new 2013 journal as well as the old, or treat it as a totally separate entity?
One of the first steps I ran into when I started to "just do it" and got a little confused, was migrating the mailbox for the "Vault Service Account". Initially, documentation I've read says we need to migrate that mailbox to Exchange 2013, but won't that then break archiving completely for the 2007 environment?
Thanks everyone for any input you might have here. I know I'm not the first one to upgrade an exchange server with vault and keep everything running smooth in the process, hopefully I can learn a little from the experts here. :)