Patent ID: 7774545

Claim:
A method of a redundant array of independent drives (RAID), comprising: processing at least one attribute data describing a volume group of the RAID, wherein the at least one attribute data to include at least a size request data determining a total number of the plurality of drives in the volume group; automatically selecting a plurality of drives of the volume group based on a prioritized order of (i) an optimum tray distribution of the volume group (ii) a spindle speed of each drive in the volume group, wherein the spindle speed of the each drive in the volume group is no slower than a spindle speed of any one of unselected drives in the each of the drive trays, and (iii) a vertical alignment of the plurality of drives in the volume group; and accessing each of the plurality of drives through a preferred controller I/O channel that is less utilized when a dispersion request data of the at least one attribute data is processed.