Exchange 2013 Server Questions

[7earitup]

Some questions for any server junkies out there that run their own mail servers. I have a client we setup a new server for about 6 months ago. The trial period on Exchange 2013 is getting ready to run out - I have the following concerns:

1. Is the Exchange 2013 going to cease functioning when the expiration date comes along? I have read conflicting conclusions on this - some say it just drops to a standard edition with no support. Others says it stops altogether. Which is it?
2. I have the old hard drives from the original server that crashed. These still have the Windows Server 2012 R2 files and Exchange 2013 files on them. I was able to pull the Windows Server 2012 key from it, but I have absolutely no clue where to look for the Exchange 2013 key in the files. I have tried a number of utilities such as Produkey with no luck.

Any help is greatly appreciated!

 

[Dahak]

1) most likely yes, i ran into this personally where we had installed Exchange 2013 and we though we entered the key but missed one save button
2) no idea, they should have it recorded somewhere depending on where they got the license, for example Microsoft's Volume License Service Center