Distributing and finding method of meta information for management of data storage systems in computer systems, involves application of user data zone and associated security area in data storage system

摘要

The method of meta information involves application of a user data zone and associated security area in data storage system (4). Safety area serves to the additional decentralized storage of meta information and its absolute condition and separation in memory sections specified on the storage system. The virtual address of the data, which is to be stored, of the logical data area is converted in the associated physical address on the data storage system consecutively with each allocation or shift of an extent of the user data zone during storing of data on the data memory system by a super ordinate instance. The additional meta information is stored in the associated safety area. All the user data stored on the data storage system and the allocation to the logical data areas can be reconstructed after a loss of the central instance for each data storage system with the help of the meta information stored in a safety area of and can be stored in a central instance. INDEPEDENT CLAIMS are also included for the following: (1) Computer program product; and (2) Computer readable storage medium.