CLOUD STORAGE ARRANGEMENT AND METHOD OF OPERATING THEREOF

摘要

There is provided a storage arrangement and a method of operating thereof. The storage arrangement comprises a first storage system and one or more second storage systems operatively coupled to the first storage system. First control layer is operable to handle a first logical address space comprising at least one first logical group characterized by a plurality of logical block addresses; said first control layer comprises a first mapping module handling a first mapping structure associated with said at least one first logical group. Each second control layer comprises, respectively, a second mapping module handling a second mapping structure associated with said at least one first logical group. The first mapping structure is configured to provide mapping between logical addresses related to said at least one first logical group and corresponding addresses related to the first physical address spaces, and/or to point to respective second mapping structure configured to provide mapping between logical addresses related to said at least one first logical group and corresponding addresses related to respective second physical address spaces.