Patent ID: 7111147

Claim:
A system configured to map a capacity of storage devices into any RAID group of a volume of a storage system, the storage devices organized as one or more RAID groups, the storage devices further cooperating to define an arrangement of volume block number (VBN) space on the volume, the system comprising: a RAID subsystem of the storage system, the RAID subsystem managing storage and retrieval of information to and from the volume; one or more raidmap structures used to map one or more VBN ranges of the VBN space of the volume into a disk block number (DBN) space of each storage device, the raidmap maintained by the RAID subsystem and comprising mapping parameters that enable mapping to selected DBN ranges of the DBN space on each storage device from VBN ranges of the volume, the raidmap configured to accept mapping parameters to establish different range lengths for different DBN ranges; and a disk label structure on each storage device, the disk label structure adapted to store one or more raidmap structure on each storage device.