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greywindFlag for United States of America

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SBS 2003 to SBS 2008 migration: Can mailboxes be moved one at a time?

I am soon starting an SBS 2003 to SBS 2008 migration. Using the Migration Wizard how does the mailbox migration work? Does it move everyone at the same time or can you move people one at a time? If you can move people one at a time is there a way for people to access their email if they haven't been migrated yet or after they have been migrated. Or is it best just to tell the client that they won't be able to access their mailboxes until the move is completed for everyone? Hope this makes sense.
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Alan Hardisty
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You can select all the users at once, but only 4 at a time will actually be moved at any one time.

I would advise them that their mail will be down for a period of time.  When their mailboxes are moving across, they won't be able to access them anyway, so they will be inevitable down time.
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Once a mailbox has finished migrating to the new server will they then be able to send/receive mail even if everyone else is still migrating?
Assuming I changed port forwarding to the new server.
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Alan Hardisty
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Here is another issue I am confused about. I am using the following site as a guide to do the migration.

http://blog.mpecsinc.ca/2009/06/sbs-2003-to-sbs-2008-migration-guide.html

It looks as if I am moving the mailboxes before I move the AD user accounts. Is that right or am I missing something? Shouldn't the AD accounts need to be moved before the mailboxes?
You don't move the AD accounts.  When you join the SBS 2008 server to the SBS 2003 server, Actuve Directory gets added to the SBS 2008 server, so once you move the mailboxes over and complete the migration, you remove the SBS 2003 server leaving the SBS 2008 server running the show with AD on exactly the same (well apart from the 2008 additions) as it was on the SBS 2003 server including all AD user accounts etc.
Ok that makes sense. So it's just like dcproming a new standard server into the environment. AD automatically gets replicated. I just wasn't sure how that worked with Small Business Server. Thanks for all your help!
Yes to your last comment - exactly that - just a bit more involved!

Thanks for the points.

Alan