MS Exchange 2013 deployment and Best Practices for BE 2014

Hi,

We have the following :-

1. MS Exchange 2013 (CU2) on Windows 2012 STD (64bit). [This is a VM in Vsphare 5.x]

2. MS Exchange 2013 Cache server on Windows 2012 STD (64bit). [This is a VM in Vsphare 5.x].

3. BE 2012 on Windows 2008 R2 STD as physical server.

MS Exchange 2013  is in clustered and database is in storage.

I am going for up gradation the BE 2012 to BE 2014.

Ann I will configure the MS Exchange backup using BE 2014.

And cautions or steps that need to take care..

Any best practices ....

Thanks.