Patent ID: 9632889
Date: 2017-04-25
CPC Classifications: G06F

Claim:
1. A method for optimizing the performance, capacity and redundancy of a plurality of physical storage devices having data stored thereon, the method comprising: dividing each of the physical storage devices into at least two logical slices, a first slice of each physical storage device occupying logical block address 0 to n, and a second slice of each physical storage device occupying logical block addresses n+1 to m; assigning a first combination having all the first slices of the physical storage devices to a first RAID method that uses independent IO; assigning a second combination having all the second slices of the physical storage devices to a second RAID method that uses synchronized IO; and automatically rebuilding the data on each slice, according to its RAID method, of a particular physical storage device upon failure and replacement of the particular physical storage device, whereby the second RAID method is different from the first RAID method, and each RAID method is assigned to its respective combination based on desired input/outputs per second (IOPS) and data protection for data to be stored in the respective range of logical block addresses of the combination.