Have you ever done it before?

How much data do you need to move? How big is your pipe? What is the current 
version of Office deployed? Do you have ADFS already deployed and configured? 
Do you know what permissions need to look like? How many people have 
DA/OrgAdmin in the local organization and how many will have it in O365? Have 
you federated with MSFT yet?

Lots and lots of questions to be answered before you can apply a good time 
estimate.

Presuming the client is doing their own move requests (so I don't have to sit 
there and watch and wait for them) but I'm completing them (to fix errors), in 
an environment where the infrastructure is in good condition and there is a 
strong corporate sponsor, probably 3-4 man weeks.

On the other hand, I've got a 15000 seat deployment that has gotten mired down 
in politics, we've spent 6 calendar months (1.5 months of my time) and I'd 
estimate we are only about a third of the way there - for planning. If they 
weren't such a good client, I'd fire them and move on... (I don't do well with 
politics.)

From: [email protected] [mailto:[email protected]] On 
Behalf Of Jesse Rink
Sent: Wednesday, August 24, 2016 1:54 PM
To: [email protected]
Subject: Re: [NTSysADM] Office 365 migrations


Out of curiosity, start to finish, how many service-hours did it take you to do 
600 users, start to finish, including project planning, etc.?

Thanks for Patching tip with Office.





Jesse Rink


Website<http://www.sourceonetechnology.com/> | 
Blog<http://www.sourceonetechnology.com/blog/> | 
LinkedIn<https://www.linkedin.com/in/jesse-rink> | 
Twitter<https://twitter.com/SourceOne_WI>



________________________________
From: [email protected]<mailto:[email protected]> 
<[email protected]<mailto:[email protected]>> on 
behalf of Jonathan Raper <[email protected]<mailto:[email protected]>>
Sent: Wednesday, August 24, 2016 11:39 AM
To: [email protected]<mailto:[email protected]>
Subject: RE: [NTSysADM] Office 365 migrations


+1 for O365 for IT Pros: 
http://exchangeserverpro.com/ebooks/office-365-for-it-pros/



The authors know their stuff. I follow them on Twitter and they've responded to 
a couple of questions I've thrown at them.



I actually completed a hybrid migration from Exchange 2007 to O365 last year. 
We presently have right at 600 users in O365.



Let me know what questions you have and I'll do my best to answer.



Basic overview...



Get an O365 tenant setup

Figure out your certificate

Add/federate domain to O365

Setup Azure AD Connect to sync on-premises objects to O365

Setup ADFS for true Single Sign On (not the same as Same Sign On)

Spin up one (or more) hybrid server (in our case, two 2013 servers)

Setup one or more migration endpoints (in our case, we used the hybrid servers, 
plus one additional 2013 server - that we decommissioned once the users were 
migrated)

Migrate some test mailboxes back and forth

Migrate a batch of test users

Perform full migration (maximum batch size is dependent upon speed/quality of 
internet connection and number of migration end points)

Decommission all but the hybrid servers - you'll need the hybrid servers in 
order to be able to fully manage the users' mailboxes



Somewhere along the way you'll need to validate that everyone has a supported 
version of Outlook, and that all systems are FULLY patched with windows and 
Office updates. This WILL bite you in the rear if you don't make certain that 
Office is fully patched.



Jonathan



From: [email protected]<mailto:[email protected]> 
[mailto:[email protected]] On Behalf Of Todd Lemmiksoo
Sent: Wednesday, August 24, 2016 10:18 AM
To: [email protected]<mailto:[email protected]>
Subject: Re: [NTSysADM] Office 365 migrations



Office 365 for IT Pros over at ExchangeServer Pro



On Wed, Aug 24, 2016 at 8:17 AM, Jesse Rink 
<[email protected]<mailto:[email protected]>> wrote:

Does anyone know of any really good documentation or planning guide for 
mid-sized scale Office 365 migrations (roughly 300-600 users)?   I know 
Microsoft has some guides available 
(https://support.office.com/en-us/article/Deployment-planning-checklist-for-Office-365-5fa4f6ef-35ad-4840-91c1-4834df3df5a0?ui=en-US&rs=en-US&ad=US
  )  but I'm curious if anyone knows of other guides or EXAMPLES that are 
worthwhile.... Do we have anyone on the list who has gone through and performed 
any migrations of that size that can provide input?





I have one upcoming and it's going to be very important that the entire 
migration is Planned, Staged, Tested, Piloted, Documented, etc.







Jesse Rink





Website<http://www.sourceonetechnology.com/> | 
Blog<http://www.sourceonetechnology.com/blog/> | 
LinkedIn<https://www.linkedin.com/in/jesse-rink> | 
Twitter<https://twitter.com/SourceOne_WI>







--

T. Todd Lemmiksoo
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