Abstract: A method and a data based bookmark management system for data based bookmark management in a storage unit are provided. The method includes performing an analysis of a plurality of bookmarks assigned in at least one logical unit number (LUN) of the storage unit to identify at least one bookmark having an expiration time that has been reached; deleting the identified at least one bookmark; determining that data referred by the deleted bookmark is not referred by at least another bookmark of the plurality of bookmarks having an expiration time that has not been reached; and removing from the storage unit the data respective of the deleted at least one bookmark, upon determination that the data is not referred to by the at least another bookmark.

Abstract: A method and system for ensuring consistency in data updates transactions in a distributed storage system (DSS) are provided. The method includes receiving an aggregated transaction request comprising monotonous transaction requests, wherein each monotonous transaction request is initiated by at least one computing node of a plurality of computing of nodes in the DSS, wherein the root computing node and the plurality of computing nodes are arranged in a tree structure; generating a range of transaction indexes based on the aggregated transaction request; and passing the generated range of transaction indexes along the plurality of computing nodes according to their respective level in the tree structure hierarchy, wherein each of the plurality of computing nodes initiating the monotonous transaction request is allocated with a unique portion of the aggregated transaction indexes, thereby ensuring time-order access to at least one storage device in the DSS.

Abstract: A network storage system for a download intensive environment is provided. The network storage comprises at least a data storage server (DSS) that includes an interface enabling connection of the DSS to a network at a location that enables at least a view of network transactions performed by a plurality of clients; a storage unit; and a system adapted to monitor the network transactions occurring on the network and identification of the network transactions as belonging to a registered client of the DSS, and storing in the storage the transactions with an identification corresponding to the registered client.

Abstract: A method and system for storage of a data block for time continuum back-in-time data retrieval. The method comprises receiving a data block from a user node; updating an index stored in a memory respective of a time that the data block was received, wherein the time is a past time for retrieval of the data block; generating a hash number respective of contents of the data block; updating the index with the generated hash number; checking for existence of the generated hash number in a database; upon determination that the generated hash number does not exist in the database saving the data block in a storage device; increasing monotonously a transaction number respective of the generated hash number; and updating the index with the transaction number.