Some questions on Exchange Server 2003 to 2010 migration
We are going to be migrating our single Exchange Server 2003 to Exchange Server 2010. With Exchange Server 2010 we will have 3 Mailbox servers.
1. I have been reading the document, "Enterprise Vault 9.0 Archiving from Exchange Server 2010." and it generated a question regarding the statement, "As per best practice recommendation a service mailbox should be created for every Exchange Mailbox server that will potentially host one of the databases." In talking, with my Exchange Adminstrator, the mailbox database is going to be replicated to the other two mailbox servers (one on site and the other offsite). We already have a Vault Service Account with a mailbox on our current Exchange 2003 server. If the same database is going to be replicated from the primary 2010 Mailbox server to the other two servers, wouldn't the Vault Service account and Service mailbox already be on the other two servers? So I don't understand why I would need to create two additional service mailboxes. Would someone clarifiy this for me?
2. We are going to be gradually moving our mailboxes over to Exchange 2010 over the course of a month. I read Tech48928 and it seems to describing a one shot deal of moving mailboxes. So I'm not sure if that article really applies to my situation. Other than running the shell script for the throttling, what else do I need to do?
3. The article also said that I would need to create an Archving task for each server. I'm assuming I would keep my current archiving task for the 2003 server and then create 3 additional archivng taks for the three 2010 servers. The article says to keep all the tasks "running". Are they any potential conflicts with simultaneously archiving 2003 ans 2010 while I'm in this =transiton period?