Method for organizing storage devices of unequal storage capacity and distributing data using different raid formats depending on size of rectangles containing {HEAD ~ sets} of {TAIL ~ the storage devices} 
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Method for organizing storage devices of unequal storage capacity and distributing data using different raid formats depending on size of rectangles containing { HEAD ~ sets } of { TAIL ~ the storage devices }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL