RE: Exch2k3 migration to different AD, Forest

From: "A. Michael Salim" <msalim@xxxxxxxxxxxx>
To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
Date: Thu, 24 Mar 2005 14:33:42 -0500 (EST)
Hi,

> After the DNS switch, once you are ready to shut down the old server,
> you have to use the Exmerge and create PST files for all the mailboxes,
> and define a filter that will include only messages received after the
> last full backup date. This way the PST files will be tiny, and you can
> import them into the new store using exmerge again without much hassle.
> When you do the final exmerge in the old server make sure you isolate it
> from users and the Internet, if you still have an MX pointing to it.

Sounds like a plan!.  Thanks.

best regards
Mike

> -----Original Message-----
> From: A. Michael Salim [mailto:msalim@xxxxxxxxxxxx]
> Sent: Thursday, March 24, 2005 1:52 PM
> To: [ExchangeList]
> Subject: [exchangelist] RE: Exch2k3 migration to different AD, Forest
>
> http://www.MSExchange.org/
>
> Hello Raj,
>
> Thanks for your details help as always.  How about the last step, i.e.
> getting all the mailboxes sync'd up between the new server and old
> server
> so that when we do the DNS switch, the new server mailboxes have all the
> most recent content?
>
> Best regards
> Mike
>
> > Mike,
> > You have a typical situation here.
> > I would think of doing the following,
> >
> > 1) Create a most recent full backup of your exchange IS and ship it to
> > the new location.
> > 2) Create CSVDE files of user object, groups DLs and ship it to the
> new
> > location.
> > 3) In the new location Install Exchange, import the CSVDE files to the
> > AD. DO not mail enable any users yet, you have to make sure the CSVDE
> > does not have email attributes.
> >
> > 4) Then restore the backup from the other location and redirect to the
> > new server. Make sure you create a Mailbox store with the identical
> name
> > as the other location for this to work.
> >
> > 5) Once the restore is done, run a clean up of the mailboxes, then use
> > the MBConnect (Mailbox connect) utility to connect the existing user
> > objects to the restored mailboxes. MBConnect should automatically link
> > the mailbox to the corresponding user based on the alias name.
> >
> > 6) I have done this in a test environment. I suggest you play around
> > with MDBconnect before implementing in production.
> >
> > 7) The reason I don't favor PST file method is, it is more time
> > consuming, and it grows the size of your priv.ed as all single
> instance
> > storage is lost.
> >
> >
> > HTH
> >
> >
> > Regards,
> >
> > Raj
> >
> >
> > -----Original Message-----
> > From: A. Michael Salim [mailto:msalim@xxxxxxxxxxxx]
> > Sent: Thursday, March 24, 2005 11:06 AM
> > To: [ExchangeList]
> > Subject: [exchangelist] Exch2k3 migration to different AD, Forest
> >
> > http://www.MSExchange.org/
> >
> > Hi,
> >
> > I am migrating an Exchange server with about 100 users from one
> > Geographical location to another.  There are about 100 mailboxes and
> > over
> > 100GB of mailbox space so migrating all content over the Internet is
> not
> > feasible.  Furthermore, the new and old Exchange servers are not
> related
> > to
> > each other in any way such as AD, GC, Forest, and no trust
> > relationships.
> > It is a pure Internet (TCP/IP and no NetBios etc) interconnection
> > between
> > old and new servers, not even a VPN.
> >
> > Here is the procedure I am following:
> >
> > a) On the old sever, use Exmerge to export the mailboxes to PST files
> > and
> > save to a USB drive Use CSVDE and LDIFDE to export the users and
> groups
> > and save to same USB drive.
> >
> > b) Ship USB drive to new location.
> >
> > c) On new server, used LDIFDE and/or CSVDE to recreate users and
> groups.
> >
> > d) On new server, import all the PST files 9which by now are a few
> days
> > old).
> >
> > My questions are:
> >
> > 1) Is this a "best practice" method for these circumstances or is
> there
> > a
> > better way to do this?
> >
> > 2) After all the users are created and mailboxes imported, how do I
> > "synchronize" the two servers (old and new) so that the mailboxes on
> the
> > new server are "up to date" before I switch over the DNS?  Otherwise I
> > will either have a gap of a few days in the mailboxes, or I will need
> to
> > all Exchange services completely on the old server for 1-2 days while
> > the
> > USB drive is being exported, shipped, and imported? (the incoming
> email
> > would be diverted to a store-and-forward secondary mailserver during
> > this
> > process, of course).  Needless to say, stopping the Exchange server
> for
> > any length of time is not feasible since these are busy users who rely
> > heavily on their email.
> >
> > best regards
> > Mike
> >
> >
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RE: Exch2k3 migration to different AD, Forest

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