Request for Advice - AD/Exchange Migration
Scenario:
CompanyA:
AD 2003 Native
Exchange 2007
CompanyB:
AD 2008 Mixed
Exchange 2003
CompanyA acquires CompanyB.
CompanyA's desire:
Single forest with two child domains (CompanyA.parentco.corp and CompanyB.parentco.corp).
Single Exchange organization to host email boxes for CompanyA and CompanyB users. The users would need to default to their respective external domain addresses (companyA.com for CompanyA.partentco.corp and companyB.com for CompanyB.parentco.corp) but have the ability to have the other external domain addresses added as needed on a case by case basis.
AD is to be 2008 and Exchange is to be 2010.
CompanyA desires for CompanyA.parentco.corp to host its users and computers and CompanyB.parentco.corp to host its users and computer.
Questions:
What is the easiest way to make this happen? What is the safest way to make this happen? New hardware is a given and will be purchased, but not until a plan is in place and approved.
Much obliged.
DrUltima
CompanyA:
AD 2003 Native
Exchange 2007
CompanyB:
AD 2008 Mixed
Exchange 2003
CompanyA acquires CompanyB.
CompanyA's desire:
Single forest with two child domains (CompanyA.parentco.corp and CompanyB.parentco.corp).
Single Exchange organization to host email boxes for CompanyA and CompanyB users. The users would need to default to their respective external domain addresses (companyA.com for CompanyA.partentco.corp and companyB.com for CompanyB.parentco.corp) but have the ability to have the other external domain addresses added as needed on a case by case basis.
AD is to be 2008 and Exchange is to be 2010.
CompanyA desires for CompanyA.parentco.corp to host its users and computers and CompanyB.parentco.corp to host its users and computer.
Questions:
What is the easiest way to make this happen? What is the safest way to make this happen? New hardware is a given and will be purchased, but not until a plan is in place and approved.
Much obliged.
DrUltima
Last Comment
setasoujiro
the easiest , best way would be to upgrade both of the domains to 2008 seperately, then when all is well, create a trust between the domains
ASKER
Not an option. CompanyA wants a single forest with child domains, not two forests in a Trust.
DrUltima
DrUltima
then it will make things a lot harder.
i think you're best of setting up a new domain for comp B after A is upgraded and ready to accept cchils
i think you're best of setting up a new domain for comp B after A is upgraded and ready to accept cchils
ASKER
You misunderstand... I may not be clear in my requirements. I am sorry.
Root of forest is not to contain any users other than builtin and service accounts. All user accounts must remain in the child domain. The way I see it is three new domains (root of forest and two children), importing users into their respective child domains. What I am unclear about is the best placement for Exchange. Will it work on the root to service both child domains, or must there be two Exchange instances in each of the child domains (and if so, how to mitigate having both public domains available to both child ad domains)?
DrUltima
Root of forest is not to contain any users other than builtin and service accounts. All user accounts must remain in the child domain. The way I see it is three new domains (root of forest and two children), importing users into their respective child domains. What I am unclear about is the best placement for Exchange. Will it work on the root to service both child domains, or must there be two Exchange instances in each of the child domains (and if so, how to mitigate having both public domains available to both child ad domains)?
DrUltima
ASKER
This is where I really wish could can just tell AD "Make yourself a child of this parent".
no it will work in the root domain.
and also in one of the childs if trusts are all in order
and also in one of the childs if trusts are all in order
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ASKER
I am already familiar with ADMT, thanks. Also, the third link is not applicable, as it is for Exchange 2003, not 2010.
DrUltima
DrUltima
CompanyB is still using Exchange 2K3, hence the recommendation of that page.
If it's not needed then don't refer to it.
Was just trying to be helpful.
If it's not needed then don't refer to it.
Was just trying to be helpful.
ASKER
And I appreciate that. The current plan is to retire both current Exchange organizations (2003 and 2007) and install a new one. One possible path is this:
http://technet.microsoft.com/en-us/library/aa998031.aspx
Although, it would be multiple forests. Still in planning stages, so the requirement to all be in one forest may be able to be mitigated. One thought I have is this, though. If you can have your Exchange 2010 Organization in a different forest, why can you not have it in the same forest but a different domain. Anyone have experience with that scenario?
DrUltima
http://technet.microsoft.com/en-us/library/aa998031.aspx
Although, it would be multiple forests. Still in planning stages, so the requirement to all be in one forest may be able to be mitigated. One thought I have is this, though. If you can have your Exchange 2010 Organization in a different forest, why can you not have it in the same forest but a different domain. Anyone have experience with that scenario?
DrUltima
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Exchange
Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.
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