MBR or GPT?

[Sitt]

I have just installed 2x 2TB hdd into my system to be used as storage only, I need to initialize the disks but I have 2x options i.e. MBR or GPT - which one do I choose? Using Windows 7

 

[rpstewart]

MBR. The only time you need to use GPT is if the volume is more than 2Tb