Abstract: The present invention is directed toward methods and systems for data de-duplication. More particularly, in various embodiments, the present invention provides systems and methods for data de-duplication that may utilize a vectoring method for data de-duplication wherein a stream of data is divided into “data sets” or blocks. For each block, a code, such as a hash or cyclic redundancy code may be calculated and stored. The first block of the set may be written normally and its address and hash can be stored and noted. Subsequent block hashes may be compared with previously written block hashes.

Abstract: The present invention is directed toward methods and systems for data de-duplication. More particularly, in various embodiments, the present invention provides systems and methods for data de-duplication that may utilize a vectoring method for data de-duplication wherein a stream of data is divided into “data sets” or blocks. For each block, a code, such as a hash or cyclic redundancy code may be calculated and stored. The first block of the set may be written normally and its address and hash can be stored and noted. Subsequent block hashes may be compared with previously written block hashes.

Abstract: The present invention is directed toward methods and systems for data de-duplication. More particularly, in various embodiments, the present invention provides systems and methods for data de-duplication that may utilize a vectoring method for data de-duplication wherein a stream of data is divided into “data sets” or blocks. For each block, a code, such as a hash or cyclic redundancy code may be calculated and stored. The first block of the set may be written normally and its address and hash can be stored and noted. Subsequent block hashes may be compared with previously written block hashes.

Abstract: The present invention is directed toward methods and systems for data de-duplication. More particularly, in various embodiments, the present invention provides systems and methods for data de-duplication that may utilize a vectoring method for data de-duplication wherein a stream of data is divided into “data sets” or blocks. For each block, a code, such as a hash or cyclic redundancy code may be calculated and stored. The first block of the set may be written normally and its address and hash can be stored and noted. Subsequent block hashes may be compared with previously written block hashes.

Abstract: The present invention is directed toward methods and systems for data de-duplication. More particularly, in various embodiments, the present invention provides systems and methods for data de-duplication that may utilize a vectoring method for data de-duplication wherein a stream of data is divided into “data sets” or blocks. For each block, a code, such as a hash or cyclic redundancy code may be calculated and stored. The first block of the set may be written normally and its address and hash can be stored and noted. Subsequent block hashes may be compared with previously written block hashes.

Abstract: The present invention is directed toward methods and systems for data de-duplication. More particularly, in various embodiments, the present invention provides systems and methods for data de-duplication that may utilize a vectoring method for data de-duplication wherein a stream of data is divided into “data sets” or blocks. For each block, a code, such as a hash or cyclic redundancy code may be calculated and stored. The first block of the set may be written normally and its address and hash can be stored and noted. Subsequent block hashes may be compared with previously written block hashes.

Abstract: The present invention is directed toward methods and systems for data de-duplication. More particularly, in various embodiments, the present invention provides systems and methods for data de-duplication that may utilize a vectoring method for data de-duplication wherein a stream of data is divided into “data sets” or blocks. For each block, a code, such as a hash or cyclic redundancy code may be calculated and stored. The first block of the set may be written normally and its address and hash can be stored and noted. Subsequent block hashes may be compared with previously written block hashes.

Abstract: The present invention is directed toward methods and systems for data de-duplication. More particularly, in various embodiments, the present invention provides systems and methods for data de-duplication that may utilize a vectoring method for data de-duplication wherein a stream of data is divided into “data sets” or blocks. For each block, a code, such as a hash or cyclic redundancy code may be calculated and stored. The first block of the set may be written normally and its address and hash can be stored and noted. Subsequent block hashes may be compared with previously written block hashes.

Abstract: The present invention is directed toward methods and systems for data de-duplication. More particularly, in various embodiments, the present invention provides systems and methods for data de-duplication that may utilize a vectoring method for data de-duplication wherein a stream of data is divided into “data sets” or blocks. For each block, a code, such as a hash or cyclic redundancy code may be calculated and stored. The first block of the set may be written normally and its address and hash can be stored and noted. Subsequent block hashes may be compared with previously written block hashes.

Abstract: A method, system, apparatus, and computer readable medium storing instructions for recording data tracks and a method and system for reading data tracks. For recording data tracks, virtual boundary of a first data track recorded on the storage medium is determined. The recording element is positioned based on the determined virtual boundary of the first track and a second data track is recorded by the positioned recording element. For reading data tracks, a first virtual boundary of a first data track and a second virtual boundary of the first data track are determined and a reading element is positioned at a center of the first data track based on the determined virtual boundaries. In the system of reading recorded data tracks, a number of forward reading elements and backward reading elements are provided. The forward reading elements have different pitches.

Abstract: A data storage system comprises a plurality of storage devices and a storage system controller. The storage system controller controls data and redundancy data stored to and read from the storage devices such that the data is stored at least in part in a region which comprises storage areas on least two of the storage devices and such that the storage devices appear as a single storage device to an entity external to the data storage system. The storage system controller comprises a redundancy data generator for generating the redundancy data, a de-duplication fingerprint definer to define a portion of the redundancy data as additionally representing a de-duplication fingerprint for the region, and a data de-duplicator to identify a duplicated region based upon finding a match to the de-duplication fingerprint within the redundancy data of the data storage system.

Abstract: The present invention is directed toward methods and systems for data de-duplication. More particularly, in various embodiments, the present invention provides systems and methods for data de-duplication that may utilize a vectoring method for data de-duplication wherein a stream of data is divided into “data sets” or blocks. For each block, a code, such as a hash or cyclic redundancy code may be calculated and stored. The first block of the set may be written normally and its address and hash can be stored and noted. Subsequent block hashes may be compared with previously written block hashes.

Abstract: A method, system, apparatus, and computer readable medium storing instructions for recording data tracks and a method and system for reading data tracks. For recording data tracks, virtual boundary of a first data track recorded on the storage medium is determined. The recording element is positioned based on the determined virtual boundary of the first track and a second data track is recorded by the positioned recording element. For reading data tracks, a first virtual boundary of a first data track and a second virtual boundary of the first data track are determined and a reading element is positioned at a center of the first data track based on the determined virtual boundaries. In the system of reading recorded data tracks, a number of forward reading elements and backward reading elements are provided. The forward reading elements have different pitches.

Abstract: A method, system, apparatus, and computer readable medium storing instructions for recording data tracks and a method and system for reading data tracks. For recording data tracks, virtual boundary of a first data track recorded on the storage medium is determined. The recording element is positioned based on the determined virtual boundary of the first track and a second data track is recorded by the positioned recording element. For reading data tracks, a first virtual boundary of a first data track and a second virtual boundary of the first data track are determined and a reading element is positioned at a center of the first data track based on the determined virtual boundaries. In the system of reading recorded data tracks, a number of forward reading elements and backward reading elements are provided. The forward reading elements have different pitches.

Abstract: The present invention is directed toward methods and systems for data de-duplication. More particularly, in various embodiments, the present invention provides systems and methods for data de-duplication that may utilize a vectoring method for data de-duplication wherein a stream of data is divided into “data sets” or blocks. For each block, a code, such as a hash or cyclic redundancy code may be calculated and stored. The first block of the set may be written normally and its address and hash can be stored and noted. Subsequent block hashes may be compared with previously written block hashes.

Abstract: The present invention is directed toward methods and systems for data de-duplication. More particularly, in various embodiments, the present invention provides systems and methods for data de-duplication that may utilize a vectoring method for data de-duplication wherein a stream of data is divided into “data sets” or blocks. For each block, a code, such as a hash or cyclic redundancy code may be calculated and stored. The first block of the set may be written normally and its address and hash can be stored and noted. Subsequent block hashes may be compared with previously written block hashes.

Abstract: A method, system, apparatus, and computer readable medium storing instructions for recording data tracks and a method and system for reading data tracks. For recording data tracks, virtual boundary of a first data track recorded on the storage medium is determined. The recording element is positioned based on the determined virtual boundary of the first track and a second data track is recorded by the positioned recording element. For reading data tracks, a first virtual boundary of a first data track and a second virtual boundary of the first data track are determined and a reading element is positioned at a center of the first data track based on the determined virtual boundaries. In the system of reading recorded data tracks, a number of forward reading elements and backward reading elements are provided. The forward reading elements have different pitches.

Abstract: A method, system, apparatus, and computer readable medium storing instructions for recording data tracks and a method and system for reading data tracks. For recording data tracks, virtual boundary of a first data track recorded on the storage medium is determined. The recording element is positioned based on the determined virtual boundary of the first track and a second data track is recorded by the positioned recording element. For reading data tracks, a first virtual boundary of a first data track and a second virtual boundary of the first data track are determined and a reading element is positioned at a center of the first data track based on the determined virtual boundaries. In the system of reading recorded data tracks, a number of forward reading elements and backward reading elements are provided. The forward reading elements have different pitches.

Abstract: A data storage system comprises a plurality of storage devices and a storage system controller. The storage system controller controls data and redundancy data stored to and read from the storage devices such that the data is stored at least in part in a region which comprises storage areas on least two of the storage devices and such that the storage devices appear as a single storage device to an entity external to the data storage system. The storage system controller comprises a redundancy data generator for generating the redundancy data, a de-duplication fingerprint definer to define a portion of the redundancy data as additionally representing a de-duplication fingerprint for the region, and a data de-duplicator to identify a duplicated region based upon finding a match to the de-duplication fingerprint within the redundancy data of the data storage system.

Abstract: A method, system, apparatus, and computer readable medium storing instructions for recording data tracks and a method and system for reading data tracks. For recording data tracks, virtual boundary of a first data track recorded on the storage medium is determined. The recording element is positioned based on the determined virtual boundary of the first track and a second data track is recorded by the positioned recording element. For reading data tracks, a first virtual boundary of a first data track and a second virtual boundary of the first data track are determined and a reading element is positioned at a center of the first data track based on the determined virtual boundaries. In the system of reading recorded data tracks, a number of forward reading elements and backward reading elements are provided. The forward reading elements have different pitches.