Clarification on Always on

Hi All,

I am a DBA. In our organization we are using SQL Server 2012.

So far, the High Availability concepts that I have worked are Mirroring & Log shipping.

Now, we are planning to implement "Always on" in our organisation, which is new to all of us.

My doubt is, when windows server failover clustering is enabled on the secondary server, can the same server be used as secondary IIS/mail/file server.

Moreover, We need to test "Always on" in our current secondary server(which is now used for mirroring) and testing shouldn't disturb the current setup. Is that possible?

Please advise us in this regard.

Thanks in advance.

K.P.Senthil Kumar