I have 2 Sharpoint Front-end servers and 1 Back-End server. Now I have need to extend to BI.

I would like to create PPS Dashboards on SharePoint. I need lot of performance and also redundancy in case of one server fails.

I was planning to install dedicated server for Analyses Services.

Where to install Performance Point Services? What is need to be done for infra?

Hi Kenny_I,

Please refer to the following article to configure PerformancePoint Services in SharePoint 2013:
Configure PerformancePoint Services (SharePoint Server 2013): http://technet.microsoft.com/en-us/library/ee748644.aspx

Furthermore, here is a good article about installing the BI features of SharePoint 2013 for your reference, please see:
http://blogs.msdn.com/b/querysimon/archive/2012/11/26/installing-the-bi-features-of-sharepoint-2013.aspx

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Best Regards,