advice on exchange 2013 deployment

we are currently using exchange 2010 sp3
are server environment is virtual
we are using kemp load balancers
I need advice on migrating to 2013
we have around 1800 mailboxes on 1 exchange 2010 server running all roles
should we just install 2 new 2013 servers running all roles in a dag through load balancers
or should we build out say 4 servers
2 cas servers and 2 mailboxe servers in a dag
or 2 cas servers and 4 mailbox servers
LVL 1
dougdogAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Manikandan NarayanswamySecurity Specialist & IBM Security GuardiumCommented:
Hi,

Providing such guidelines would be difficult it would be great if you use the exchange calculator wizard to know how many servers you need in this case. Because even if you doing the migration the number of servers which will be needed based on several parameters therefore it would be great if you go through the sizing guide

https://gallery.technet.microsoft.com/Exchange-2013-Server-Role-f8a61780

Thanks
Manikandan
0
dougdogAuthor Commented:
the calculator asks
number of servers hosting active mailboxes
number of database availability groups
number of lagged databases etc etc
this is why im asking the question because im looking advice on what the best type of deployment would be for 1800 users
0
Manikandan NarayanswamySecurity Specialist & IBM Security GuardiumCommented:
Hi,

According to my understanding 2 CAS Servers along with 2 mailbox servers should work. In-case if your planning to combine roles then you need to refer the guidelines for memory and CPU requirements. If your planning to virtualization of Exchange 2013 then refer the below links

https://technet.microsoft.com/en-us/library/aa996719%28v=exchg.150%29.aspx
https://technet.microsoft.com/en-us/library/jj619301(v=exchg.150).aspx

Thanks
Manikandan
0
Ultimate Tool Kit for Technology Solution Provider

Broken down into practical pointers and step-by-step instructions, the IT Service Excellence Tool Kit delivers expert advice for technology solution providers. Get your free copy now.

dougdogAuthor Commented:
Basically what im trying to find out is
would 2 virtual servers with lots of cpu and memory running multiple roles be enough for 2000 users
Is anyone running this or what type of configs are people using for this number of users
0
Manikandan NarayanswamySecurity Specialist & IBM Security GuardiumCommented:
Hi,

For 2000 Users running 2 mailbox Servers with 2 CAS Servers is sufficent. Or you can also combine the server rols into 2. In that case you will require only 2 systems for 2000 users. Please refer the below VMware Sizing for Exchange 2013 and Sizing guide by msexchange.org for the same

http://www.vmware.com/files/pdf/Exchange_2013_on_VMware_Design_and_Sizing_Guide.pdf
http://www.msexchange.org/articles-tutorials/exchange-server-2010/management-administration/exchange-2010-sizing-cheat-sheet.html
http://www.msexchange.org/articles-tutorials/exchange-server-2013/planning-architecture/exchange-2013-sizing-cheat-sheet-part2.html

Thanks
Manikandan
0
dougdogAuthor Commented:
so 2 servers possible even 3 running 1 dag would be plenty
0
Manikandan NarayanswamySecurity Specialist & IBM Security GuardiumCommented:
Hi,

Yes 3 servers running in one DAG is enough for 2000 users. However if users increase in future then you may encounter performance issues and then you may need to add more servers or add memory & CPU to existing servers. For future reference i would recommend you go through the sizing guide please

Thanks
Manikandan
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Exchange

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.