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unified messaging exchange 2013

Posted on 2014-02-11
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Does the Exchange 2013 calculator take into consideration UM requirements, should there be some?
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Question by:cmatchett
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Expert Comment

by:Jamie McKillop
ID: 39853204
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
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by:cmatchett
ID: 39853411
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?
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Assisted Solution

by:Jamie McKillop
Jamie McKillop earned 500 total points
ID: 39853449
To be clear, when you say "UM" are you talking about Exchange Unified Messaging (phone system integration) or were you referring to Lync? Lync is not UM and would have no impact on the Exchange Role Calculator.

-JJ
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Author Comment

by:cmatchett
ID: 39853477
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?
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Assisted Solution

by:Jamie McKillop
Jamie McKillop earned 500 total points
ID: 39853491
All you need to do is determine the average number and size of voicemail messages per user and factor that into the usage data you plug into the Exchange Role calculator.

-JJ
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Author Comment

by:cmatchett
ID: 39853537
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
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Expert Comment

by:Jamie McKillop
ID: 39853544
Correct. You have to estimate those numbers for your environment.

-JJ
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Author Comment

by:cmatchett
ID: 39854316
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(
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Assisted Solution

by:Jamie McKillop
Jamie McKillop earned 500 total points
ID: 39854340
If you have inactive mailboxes, I would split those off into tier 2. If they are inactive, they should have message statistics of zero. All you are planning for is the space they will take up in the databases.

-JJ
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Author Comment

by:cmatchett
ID: 39854414
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
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Assisted Solution

by:Jamie McKillop
Jamie McKillop earned 500 total points
ID: 39854421
If you are able to split your users into different tiers, the calculator will be more accurate. For example, you may know one group send/receives 200 messages per day and other group only sends/receives 100. If you can't break down your users into tiers, just lump them all into a single tier and use an average.

-JJ
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Author Comment

by:cmatchett
ID: 39854427
I should also mention that there hundreds of shared mailboxes that receive mail of which people have send on behalf of rights on...
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Author Comment

by:cmatchett
ID: 39854437
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?
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Expert Comment

by:Jamie McKillop
ID: 39854440
Correct.
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Author Comment

by:cmatchett
ID: 39854738
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 !
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Jamie McKillop earned 500 total points
ID: 39856070
Have you specified that you will combine your roles? Unless you have a specific reason to do so, you should not separate your CAS role form the mailbox server. Exchange is very memory intensive, so that number is not surprising.

-JJ
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Author Comment

by:cmatchett
ID: 39856147
i am currently separating the roles

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