new macpro Hdd

Sorry, No. It is much different from that. Depending on who are are talking to, it is much better or much worse.

The Mac Pro comes with an SSD with the system on it. It is a proprietary drive that sits on the PCIe Bus. It takes up the ONLY slot. That is the only drive that it accepts internally. There are no aftermarket replacements for that drive at this writing.

All other storage must use Thunderbolt or adapters such as these:

ThunderBolt enclosure, single drive

ThunderBolt enclosure, Multi-drive

ThunderBolt enclosure with DVD/BluRay and Drive

USB-3 enclosure

FireWire via ThunderBolt to FireWire

eSATA via ThunderBolt to eSATA

NAS via Ethernet

Others I have not considered

.

Well, Optical Drive has been removed from inside the cabinet as well.

The argumenst FOR this approach are that you now buy the set of drive enclosure(s) suited to your work, rather than being stuck with the four built-in, and all others being more difficult.

One of the biggest plusses is that cooling the central Core is no longer an issue. It comes with two GPUs that throw off so much heat they would melt the aluminum of the tall tower, but that great huge heatsink and the axial fan takes care of it.