Patent ID: 7660966
Filing Date: 2010-02-09
Classification: G06F,H04L

Abstract:
1. A method for operating a computer data storage system, comprising: assigning volume block numbers (VBNs) to a volume; assigning disk block numbers (DBNs) to each of a plurality of physical disks, the storage system including the physical disks; mapping the VBNs to the DBNs of the plurality of physical disks by mapping parameters, the mapping parameters to map a range of VBN numbers to a selected range of DBNs on a selected physical disk of the plurality of physical disks; using a plurality of mapping parameters to map a selected VBN range of the VBN numbers to a plurality of DBN ranges on the selected physical disk of the plurality of physical disks, the plurality of mapping parameters arranged as one map; creating a plurality of maps for the selected physical disk, the plurality of maps including the one map; creating a plurality of map slots on the selected physical disk; and storing a selected map of the plurality of maps in a selected one of the slots of the plurality of map slots on the selected physical disk.