Abstract: Provided is a data processing arrangement (100, 200, 300, 400) that is coupled to a data memory arrangement (102) and is configured to generate a file catalog including information describing characteristics of data files stored within the data memory arrangement. The file catalog is periodically updated so that it provides a temporal record of the information. The data processing arrangement is configured to determine a behavioral profile (404) indicative of temporal trends or patterns in the information, and to provide a warning indication in an event that the information for a given data file temporally changes in a manner that deviates more than a threshold amount from a model of expected temporal trends or patterns of the given data file.

Abstract: Provided is a computer-implemented method of backup and restore in a network data storage system (200, 310). The method includes generating, at a predefined time interval, a series of one or more virtual snapshots including, for each item in the network data storage system: (i) a strong hash of the item data, and (ii) one or more metadata elements related to the item. The method includes, in response to a request to restore a particular item: (i) searching the series of virtual snapshots for all available sources of the particular item, (ii) identifying the best source for the particular item, and (iii) recovering item data for the particular item from the identified best source.

Abstract: A method of data management in a data storage system including a plurality of data storage units, the method includes dividing each file in the data storage system into a plurality of blocks having a common size. The method further includes generating a hash value for each block using a common hash algorithm. The method further includes identifying a plurality of similar files in different data storage units, based on a comparison of the hashes for each file. The method further includes copying one or more of the identified similar files, such that similar files are stored in a single data storage unit and for one or more of the copied files, generating a link to a new location of the file. The method provides an efficient, effective, and adequate reduction of the primary storage as well as the secondary storage space.

Abstract: The presently disclosed subject matter includes various inventive aspects, which are directed to direct read access of a host computer device to a share storage space in a data storage system, as well as control of the direct read of the host computer device by a control computer device in the data storage system.

Abstract: The presently disclosed subject matter includes various inventive aspects, which are directed to direct read access of a host computer device to a share storage space in a data storage system, as well as control of the direct read of the host computer device by a control computer device in the data storage system.