Screen shots of the 3TB Seagate Barracuda XT on the Apple Mac Pro without a RAID Card.
As you can see without a RAID Card the Mac Pro can make use of 3TB internal hard disks without problem.
Here is the drive used:
![Seagate 3TB Barracuda Internal drive Seagate 3TB Barracuda Internal drive](http://2209744ce9.nxcli.net/christianriley/wp-content/uploads/sites/21/2010/09/SDC10118-300x225.jpg)
Disk Utility screen shots are shown here:
![Seagate 3TB Barracuda Internal drive showing 3,000,000,000 bytes on Mac Pro Seagate 3TB Barracuda Internal drive showing 3,000,000,000 bytes on Mac Pro](http://2209744ce9.nxcli.net/christianriley/wp-content/uploads/sites/21/2010/09/SDC101212.jpg)