Do you need a raid?

I am getting a Mac Pro 12 Core, planning on using fcp for basic captures of small shots, maybe a minute would be the longest at 1080i pro res.
I am hoping to use the internal 3gb/sec 1TB 7200-rpm Serial ATA drive for that (just media).
Then Raid-5 two other internal 2tb drives for protection for system, apps & jobs, which I will be doing heavy after effects, 3d work.
Do I even need to raid a single drive for any reason? I don't think so, but I know little about this and all of the research says you need a raid for sure for fcp.

You can't RAID 1 drive. By definition you need two or more drives to make a RAID.
I am hoping to use the internal 3gb/sec 1TB 7200-rpm Serial ATA drive for that (just media).
Get a SECOND drive. Don't use the system drive. But I think you meant that.
Then Raid-5 two other internal 2tb drives for protection for system, apps & jobs, which I will be doing heavy after effects, 3d work.
Protection of the system? Apps? Jobs? What? No...you use a protected RAID to work on, not generally as backup. And you don't use it to back up the system and your work. Use a drive for TIME MACHINE or Super Duper (for your system drive)...but if you want a drive for backup, get a RAID 5 and work on it...or get a DROBO to back up your work.
And you can't RAID 5 two drives. You need at least three. You gotta read up on this:
http://en.wikipedia.org/wiki/RAID
Generally you have your system drive...and if you want, a drive for TIME MACHINE or other backup software. Then you have a RAID drive to store your media and work from..RAID 0 for speed (two 500GB drives show up as one 1TB drive, and the data is spread across both drives), RAID 1 for redundancy (two 500GB drives show up as one 500GB drive...the footage is mirrored on both)...or RAID 5 where you have three or more drives, and one of the drives is used as redundant backup. Typically you have 5, 8, 10 or 12 drive RAID 5 setups.
And you MUST have a hardware card or storage box for Raid 5...if you want it to be any good. Look at www.maxxdigital.com, Caldigit.com...
Shane

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