I know it works with RHEL 5. I have a file server that has 2 3TB arrays and they have to be formatted with GPT to work. You cant have mbr on disks larger than 2 TB.

The partition table configuration on a physical hard disk is standardized by GPT, which employs globally unique identifiers (GUID). Another type of partition table is the MBR.

The partition table configuration on a physical hard disk is standardized by GPT, which employs globally unique identifiers (GUID). Another type of partition table is the MBR.