unified messaging exchange 2013

Hello,

No, the Exchange 2013 Server Role Calculator does not directly factor in the UM role. You will need to estimate and include UM into the user mailbox configuration fields. If you are currently using UM in a previous version of Exchange, this should already be included when you gather your usage statics in your current environment. The only impact the UM role will have in the design of the other roles would be the volume and size of emails that it adds.

-JJ

lync 2013 is going to be deployed with Exchange 2013 in this environment.

i have found that there is a lync server capacity calculator

http://technet.microsoft.com/en-us/library/dn362852.aspx

This would give me the information i need?

I am still doing my research, but i believe we deploying them together

http://technet.microsoft.com/en-us/library/dd638120(v=exchg.150).aspx

I am then trying to understand the additional resources required for the exchange servers?

so that would be..

the average message size (KB)

total send / receive capability / mailbox / day

so if the current usage is 100 messages a day, this could increase to 150 messages per day.

it could add 100K to the average message size also

Correct. You have to estimate those numbers for your environment.

-JJ

total number of tier-1 user mailboxes, this is the total number of mailboxes that fall into this category as opposed to tier-1 mailboxes that are active at any one time?

Any example i have found uses the total amount of mailboxes (active and in-active(

if there are 4300 mailboxes in total,

i suppose i need to clarify exactly what in-active mailboxes means.

Users can be either on leave or there is shift work,

These users are still part of distributions lists and receive email.  Their out-of-office will respond.  This is an active mailbox?

In the below tutorial, it specifies all users and not just those who are currently using their outlook

http://www.msexchange.org/articles-tutorials/exchange-server-2013/migration-deployment/planning-and-migrating-small-organization-exchange-2007-2013-part5.html

I should also mention that there hundreds of shared mailboxes that receive mail of which people have send on behalf of rights on...

So lets work on the basis that everybody is a tier-1 mailbox user..

There are 4300 mailboxes in total, which receive e-mail everyday and are responded to in some shape or form i.e. out-of-office etc

I would then have to put down 4300 as the active tier-1 mailboxes?

Correct.

So i put the info into the calculator specifying 3 mailbox servers

RAM required per mailbox server = 3 x 48 GB
RAM required per CAS server = 3 x 24 GB

I am shocked !

i am currently separating the roles

I need to then investigate the scenarios that would require role seperation