RAID Storage Question

I can't remember the answer to this...

I have 4 9GB disks in my server.  If I build a RAID 5 array with 3 of the disks, the storage capacity of those 3 disks is only 9GB, right?  Or is it 18 GB?
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Duncan MeyersCommented:
3 x 9GB = 27GB. You lose one disc for parity.
Duncan MeyersCommented:
Oops. Read tha darn question! Yes, you're quite correct - 3 x 9GB RAID 5 gives you 18GB. You lose one disc for parity.

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Duncan MeyersCommented:
Sorry 'bout that. I'm having one of those days... :-)
ABaruhAuthor Commented:
thanks, easy points eh??
Duncan MeyersCommented:
Glad to be of assistance.

>easy points eh??
Best sort! :-)
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