I'm planning on installing four 1TB WD Caviar Black hard drives into a four-bay RAID enclosure (with Hardware RAID built-in); I plan on using RAID 5. The array will be connected via eSATA to my Windows 7 32 bit PC. Since my disk capacity will be 3TB, this will put me over the 2TB limit. In order to correct this and have my PC see the array, do I need to format each drive in the array using GPT, or do I just format the array that shows up in Disk Management using GPT? Or...is there another procedure required? I haven't built the array yet; just being proactive.
First you need to configure the four drives as a single RAID-5 volume with 3TB capacity. Then you need to go into Disk Management and create a GPT volume on the logical 3GB drive, and finally you need to format it.