Creating RAID5 with Disk Utility?

I have three new 4TB drives and wanted to set them up in my old MacPro (Early2008) as RAID5. This should give me 8TB with one redundant disk. However, I don't see a RAID5 option in Apple Disk Utility (Version 13, in OS X 10.10.1).
In doing some digging in the Knowledge Base it suggests first creating a concatenated set with 2 of the drives and then creating a mirrored RAID set with the concatenated set and the third drive.
Not sure if this is correct or will achieve what I want. Does this provide the software equivalent of RAID5 with 8TB and one redundant drive? Thanks for any help.

Disk Utility does not do RAID 5. And there is serious question about whether anyone should be using RAID 5.
RAID 5 gets its redundancy by calculating a permutation (XOR or Checksum or similar) of the bits in two blocks, and recording that as the third block. If any of the three are lost, the other two can (in theory) be used to recover the missing data for the third.
This takes some TIME to compute the check data on Write, and may take Time to check on Read. Because of this, most RAID 5 setups include a RAID controller, both to reduce the time required, and to pre-acknowlege the receipt of proper data to be written to the drives momentarily.
The Apple RAID card (NOT recommended today) acknowledges Writes and allows the System to proceed when the data hit the RAID card, and relies on its Backup Battery to maintain the data if the power fails at that moment (before the data are actually written to the drives). Mac Pro RAID card was a nice concept when it was invented, but it has not been updated in about a decade, and is showing its age. Everything about dealing with its Backup Battery today has become evil.
The tragic flaw with RAID 5 is when a drive fails. Now you are working without a net. Everything slows WAY down, and the drives work extra hard to rebuild the missing data, because all those checksums have to be re-computed and re-written to rebuild the replaced drive. And if another drive fails while the rebuild is happening, the entire set can blow to pieces without any hope of recovery. With drives getting larger and larger without substantially improving their 'unrecoverable errors per bits read', it is becoming increasingly likely that during the course of a re-build, an uncorrectable error will occur, possibly putting the entire array out of business.

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