Hi, Khai.
Yes, LEM/SEM 6.4 and later will support the GPT format and partitions of 2 TB and greater. The only sidenote is that your SEM has to have been deployed as 6.4 or later. If you have an SEM that was deployed prior to 6.4 and since upgraded, it will still be stuck on the old MBR format. That's not something that can easily change with an upgrade - so a recent deployment is required.