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how much time to allot on groupwise to exchange migration?

i have a client with 275 mailboxes in their groupwise post office.  they have made the decision to go to exchange (for which i am eternally thankful) but now they want me to guestimate the amount of my time it's going to take.  anyone care to help me estimate this?  i'm guessing that each mailbox is about 2gb in size, but i can't be certain...

oh, and we will have to use the microsoft migration wizard because the client doesn't have the budget for the shuttle tools i've seen listed on the site here...

tia,

heidianne jackson
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heidiannej
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heidiannej
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ExchgenCommented:
If all goes well... 48 hours max.

Raghu
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heidiannejAuthor Commented:
ok, give me a quick overview (if you don't mind) of the most common things to go wrong.  everything is on one server, in one groupwise domain, in one postoffice.  so only one migration user, yes?

heidi
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ExchgenCommented:
Quick overview.... Sure.. ;)

Phase 1:
=====
Install gwise client on the exchange server.
Give appropriate permissions, so that we are able to browse both ways (ad domain and gwise domain)
Install exchange with Gwise connector.
Set up connector to dirsync between AD and Gwise (coexistance)
Test mail flow to and from exchange through gwise.

Phase 2:
======
Use exchange migration wizard to copy mailboxes over from gwise.
Uninstall gwise connector.
Done.

We can indeed migrate even without the coexistance method, where the Gwise client is installed and appropriate rights given, we would be able to move mailboxes using exchange migration wizard.


Common issues:
1. Cannot configure connector.
2. Dirsync issue one way or two way.
3. Mail flow issue one way or two way.
4. Migration wizard fails.

I hope this information is good enough,

Raghu
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heidiannejAuthor Commented:
yep, things i was thinking as i read the white papers.  thank you for your input.

heidianne
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