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Exchange 5.5 to 2003 migration time estimate needed

Not really a specific tech question, so I hope I'm not out of line here, but here it goes...

Can anyone give an estimate of how many hours a migration from exchange 5.5 to 2003 (standard) would take?  I need to hire a consultant to do it, and I need to budget for it.  I'll be setting up a new server, so both 5.5 and 2003 can exist at the same time, during the migration, but when complete, the old 5.5 server will be removed.

Particulars:

Single server, 55 mailboxes, total size, 1.6gigs (mailboxes and very limited public folders)
Windows 2000 domain, 1 DC 1 BCD
single subnet
OWA to be set up on separate dedicated web server
New 2003 server hardware/OS to be setup in advance (by me)

That's all I can think of.

Any info will be helpful.

Thanks
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mchad65
Asked:
mchad65
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1 Solution
 
LeeDerbyshireCommented:
Assuming you've done all the planning beforehand (it sounds like you have) - maybe an hour to install E2003, an hour to move the mailboxes and folders, an hour to take the old one down.  I may be being a bit generous here, on the other hand, there may be problems that can't be predicted from your description.  There will no doubt be other things he may want to do, like make sure your backup routine gets changed to include the new server, or show you how to admin the new server.  Very hard to say.  It depends how much you can do for yourself.  I'd say half a day at the least - a full day at the most.
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LeeDerbyshireCommented:
Oh, by the way, you can't have OWA on it's own any more.  That will mean installing Exchange on another server, in Front-end configuration.  That means another server licence.
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mchad65Author Commented:
Ok, so the 32 hours I was given by a consulting firm is as I suspected, a little high, huh?

I plan on having the server set up and fully updated and ready to go for the E2003 install, so that would not be part of the job.  

Re: OWA, so do people actually run it on the same server?  Or is that security blasphemy?
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LeeDerbyshireCommented:
Well, in my humble opinion, that is rather over-long.  Can I assume that you were not given a breakdown of how the time would be spent?  Clearly you have some experience in this kind of thing if you plan to install the OS yourself?  How long do think that will take?  A few hours maybe?  Well, you will find that the Exchange install will not take as long as the OS install.  You can also, no doubt, imagine the kind of things involved in moving mailboxes?  Select a user, choose Exchange Tasks, choose Move Mailbox, select a destination server.  Do it 55 times?  It's not going to take 32 hours IMHO.  All I can say is that I would expect to do it in half a day.  There will be unexpected problems, of course, there always are, so add a few more hours.

There's nothing wrong with having OWA on the same server.  I would say that most people do that.  What is very important, though, is to make sure that in general, your firewall has a secure and effective configuration.
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mchad65Author Commented:
Thanks, that's what I thought.  Yes, windows 2000/2003 install = 2-3 hours (including service packs and updated)  However,  now that I see this, maybe I will do it myself, and just have someone come in to "tune" the install?  I did the 5.5 install from scratch (no upgrade) and migrated ms mail mailboxes (way back in 1998) with no experience...  I would have, only I understand that 2003 is an entirely different animal and a lot more complicated...  

Near White Plains, NY?  Want a quick consulting job?

Thanks
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LeeDerbyshireCommented:
Try doing it yourself - I think you'll find it is not as difficult as you think.  E2003 has a nice deployment wizard that walks you through the setup.  Follow the steps for 'Join an existing 5.5 site'.  Then follow this to move the mailboxes:

http://support.microsoft.com/kb/821896/en-us

I live in the UK, BTW.
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mchad65Author Commented:
Ok, thanks very much.  Very helpful.
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