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I have use this tool several times and it is a good tool. I am not clear about your query. As per my experience, it gives decent result. I tried it for production setup and it gave good result. <br />
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Remember, you need multiple tool and testing to come up with right production approach. Designing experience is required to setup any production environment.
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What settings are you using for mailbox profiles? Resiliency? &nbsp;Number of database copies?<br />
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Use the first tab to select your options. &nbsp;You need to make sure to modify the number of mailboxes on the first tab, as the default is 80,000 tier 1 mailboxes (as an example).<br />
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We have published extensive guidance at <a href="http://aka.ms/e2013calc" rel="ugc">http://aka.ms/e2013calc</a>.
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Dear Aaron<br />
<br />
I use the correct parameters for 450 Mialboxes. But one Mailbox per Database and 8 Servers can't be correct.<br />
Regards<br />
Bernd
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DAG.png

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That doesn't sound correct. 1 server is enough for 450 mailbox. It depends what exactly you have provided in the input sheet.
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Hi Aaron,<br />
<br />
this is my input and you can see Mailbox Database Copy Configuration is yellow.<br />
Bernd<br />
<a href="https://filedb.experts-exchange.com/incoming/2018/04_w14/1293993/2018-04-03-09_32_44-ExchangeCalc9.1..jpg" target="_blank" title="2018-04-03-09_32_44-ExchangeCalc9.1..jpg (185 KB)"><img alt="2018-04-03-09_32_44-ExchangeCalc9.1..jpg" class="file-block lazyload" style="max-width: 800px;" data-src="https://filedb.experts-exchange.com/incoming/2018/04_w14/800_1293993/2018-04-03-09_32_44-ExchangeCalc9.1..jpg" /></a>
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2018-04-03-09_32_44-ExchangeCalc9.1..jpg

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No comment has been added to this question in more than 21 days, so it is now classified as abandoned.<br />
<br />
I have recommended this question be closed as follows:<br />
<br />
Split: <br />
-- Aaron Guilmette (<a href="https:#a42519326" rel="ugc">https:#a42519326</a>)<br />
-- Aaron Guilmette (<a href="https:#a42519468" rel="ugc">https:#a42519468</a>)<br />
-- Aaron Guilmette (<a href="https:#a42520499" rel="ugc">https:#a42520499</a>)<br />
<br />
<br />
If you feel this question should be closed differently, post an objection and the moderators will review all objections and close it as they feel fit. If no one objects, this question will be closed automatically the way described above.<br />
<br />
Delphineous<br />
Experts-Exchange Cleanup Volunteer
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<div class="content wysiwyg-content">
Exchange Server Role Requirements Calculator.<br />
<br />
Hi Folks,<br />
<br />
withe the last versions of the Exchange Server Role Requirements Calculator calculating mid Site Exchange Environments with up to 4000 Mailboxes is nearly impossible becaus the Exchange Server Role Requirements Calculator results for number of Mailboxes / Database, Number of Servers and number of DAGs are useless. Very small numbers of Mailboxes per Database, a bunch of Servers and even more than one DAG are not applicablefor such mides Size Environments. What is youre experience und do you even use the tool?<br />
Regards<br />
Bernd
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Exchange Server Role Requirements Calculator.

Hi Folks,

withe the last versions of the Exchange Server Role Requirements Calculator calculating mid Site Exchange Environments with up to 4000 Mailboxes is nearly impossible becaus the Exchange Server Role Requirements Calculator results for number of Mailboxes / Database, Number of Servers and number of DAGs are useless. Very small numbers of Mailboxes per Database, a bunch of Servers and even more than one DAG are not applicablefor such mides Size Environments. What is youre experience und do you even use the tool?
Regards
Bernd

Exchange Server Role Requirements Calculator issues

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.

Exchange

Databases are organized collections of data, most commonly accessed through management systems including schemas, tables, queries and processes that allow users to enter and manipulate the information or utilize it in other fashions, such as with web applications or for reporting purposes.