Disk utility to make raid 10 on an external HDD?

Hi,
I have a MacPro 3.0Ghz but use a 3.75TB SataMax external tower HDD. (i.e 5x 750GB)
At the moment it is Raid 0, but I want to make it a Raid 10 format. Can Disk Utility do this and if so, what's the process?
Any thoughts? Thanks
M

Hey,
You're going to kick yourself...
Go to Disk Utility > Help, then type "raid".  You should see an option for "Combining RAID sets".
Violà!

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