Patent ID: 8510508
Filing Date: 2013-08-13
Classification: G06F

Abstract:
1. A data accessing method, for accessing data in a storage system architecture, the storage system architecture comprising at least one disk array subsystem, and the method comprising the steps of: providing a section allocation system (SAS) for managing a plurality of media extents including a first media extent and a second media extent of the at least one disk array subsystem, obtaining a location index corresponding to a host logical block address (LBA) via a block association table (BAT); obtaining, via a physical-section-versus-virtual-section cross-referencing mechanism, a first location information of a first physical section located in the first media extent, in which the location index corresponds to the first location information; copying or moving data in the first physical section to a second physical section of the second media extent; updating a cross-reference of the physical-section-versus-virtual-section cross-referencing mechanism such that the location index corresponds to a second location information of the second physical section but not corresponds to the first location information; and performing a host input/output request addressing the host LBA through using the second location information of the second physical section to access data in the second physical section.