Re: Move mailbox process experience



"Mark Arnold [MVP]" wrote:

> On Tue, 9 Aug 2005 06:48:06 -0700, "BvdB"
> <BvdB@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> >Hello All
> >
> >Situation:
> >Old exchange 2000 mailboxes have to move to a new exchange 2003 server with
> >new hardware. The average mailbox is about 22 MB with 350 items.
> >
> >We're going to move a lot of users and I've some questions about the move
> >mailbox proces.
> >
> >1. How large is the transaction log growth by the move mailbox wizard? Say
> >you move 25 GB of mailboxes, what is the a approximately logfile growth? Does
> >it grow?
> >
> >2. How much time does it cost to move 25 GB of mailboxes to another server?
> >
> >3. Is it possible to import a exchange 2000 database or storage group to
> >another exchange 2003 server
> >
> >I would be very pleased if someone can share his/her experiences about the
> >questions above.
> >
> >Kind regards,
> >BvdB
>
> The transaction log will be similar to data moved. That's why it's a
> good plan to do a couple of backups after you have moved each batch of
> users. It keeps the number of logs to a manageable level.
>
> Elapsed time depends on the loading of the server whilst the moves are
> going on and how powerful the boxes are. 25GB should take quite a few
> hours.
>
> You can bring a 2000 store into a 2003 database. There are steps. Why
> do you want to do this if you are doing a mailbox move migration? If
> you have two boxes you should do the move method so that you don't
> inconvenience the customer by having whole stores offline.
>

The problem is that we've about 25.000 mailboxes and it will take some time
to move all the mailboxes.

Any alternative quicker sollution will be very nice. If exchange can import
a DB we could save a lot of time. Even if the store has some downtime, the
customer will be satisfied more because the total move process will last
several weeks.

I think the move process is more useful for a small account of mailboxes.

What would you advice for about 80 stores with 25.000 users, a mailbox move
or a DB import?

Kind regards
BvdB
.

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