How to calculate when I need multiple WFE and APP servers in SharePoint 2013 ?

Hi,
Please let me know about those factors are involved on the above topic. Share something from the real experience or with examples in details.
Thanks
srabon

Hi,
NOte: some links although for 2010 but fits for 2013
for the WFE is the RPS Requests per second versus the users
to get the RPS
http://smallcitydesign.com/how-to-get-sharepoint-2010-requests-per-second-rps/
and this excel sheet to get the users versus RPS
http://pcfromdc.blogspot.com/2013/02/determine-max-users-from-requests-per.html
and here you are how to get the number of front ends
http://abhayajoshi.blogspot.com/2014/01/how-to-calculate-number-of-web-front_24.html
for Apps server, it is based on memory and cpu consumption, check those links
http://blogs.msdn.com/b/sanjaynarang/archive/2013/04/06/sizing-and-capacity-planning-for-sharepoint-2013-resources.aspx
https://technet.microsoft.com/en-us/library/ff758645.aspx
https://technet.microsoft.com/en-us/library/cc262971.aspx
the most important thing after you do you initial capacity planning is capacity mangement, check my wiki article in here
http://social.technet.microsoft.com/wiki/contents/articles/28226.sharepoint-2013-capacity-management.aspx
you can also make load testing using the following:
Visual studio or
https://gallery.technet.microsoft.com/office/PressurePoint-Dragon-for-58648ae4
Kind Regards,
John Naguib
Senior Consultant
John Naguib Blog
John Naguib Twitter
Please remember to mark this as answered if it helped you

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