RE: DELL Optiplex 780 MT question
The INTEL chipset Raid and many older Raid cards do not support making (BOOTABLE) containers larger than 2TB. As non raided drives with GPT partitions you can use them. I also don't know which chipsets do or don't support Port Multiplier. Orico and others support mounting drives onto the PCI slot brackets. If you use an R494D you can mount 2X laptop Drives into a standard Dell 3.5 bay.