Patent ID: 6233697
Filing Date: 2001-05-15
Classification: G06F

Abstract:
A storage apparatus system comprising:at least two storage medium groups each comprising (m+n) pieces of storage medium, where m and n are integers and where m.gtoreq.1 and n.gtoreq.1, each of said (m+n) pieces of storage medium being used for storing at least one record group including m data records and n redundant records, wherein each of said data records contains data accessed by an information processing unit and each of said redundant records contains redundant data for recovering data contained in said data records;at least one medium accommodating rack comprising a plurality of accommodation units each for accommodating one of said (m+n) pieces of storage medium;at least two read/write-unit groups each comprising (m+n) read/write units for mounting said (m+n) pieces of storage medium and carrying out read/write operations on said (m+n) pieces of storage medium;at least one robot for transporting said (m+n) pieces of storage medium between said medium accommodating racks and said read/write units;a control unit for controlling said medium accommodating rack, said read/write units and said robot in accordance with a request made by said information processing unit; andmeans for allocating in advance one of said read/write-unit groups as a read/write-unit group dedicated for execution of processing to recover data stored in any of said (m+n) pieces of storage medium incurring a failure.