Abstract: Example apparatus and methods control a data storage system to store data in a self-describing logical data storage capsule using a logical cylindrical recording format. Example apparatus and methods assign a searchable, globally unique identifier to the capsule and associate the globally unique identifier with a user. The logical data storage capsule is migrated from a first data storage medium to a second data storage medium without translating or reformatting the data storage capsule. The data storage capsule contains information describing to a data storage device how to migrate the capsule without translating or reformatting the data storage capsule. Example apparatus and methods dynamically select an error correction approach for storing data in the data storage capsule, de-duplicate, and encrypt the data storage capsule. The data storage capsule may be local, or may be part of a cloud-based storage system.

Abstract: A diagnostic tape (318) for use with a tape drive (310) having a tape head (322) includes a first tape section (430A) and a second tape section (430B). The first tape section (430A) and the second tape section (430B) are configured to move across the tape head (322) during use of the tape drive (310). The first tape section (430A) includes a first patterned data code (432A) that is indicative of a first spacing between the tape head (322) and the first tape section (430A). The second tape section (430B) includes a second patterned data code (432B) that is indicative of a second spacing between the tape head (322) and the second tape section (430B). The second patterned data code (432B) is different than the first patterned data code (432A). The diagnostic tape (318) can further include a tape head cleaning section (630F) including abrasive material (650) that is configured to move across the tape head (322) to clean the tape head (322).

Abstract: Example apparatus and methods control a data storage system to store data in a self-describing logical data storage capsule using a logical cylindrical recording format. Example apparatus and methods assign a searchable, globally unique identifier to the capsule and associate the globally unique identifier with a user. The logical data storage capsule is migrated from a first data storage medium to a second data storage medium without translating or reformatting the data storage capsule. The data storage capsule contains information describing to a data storage device how to migrate the capsule without translating or reformatting the data storage capsule. Example apparatus and methods dynamically select an error correction approach for storing data in the data storage capsule, de-duplicate, and encrypt the data storage capsule. The data storage capsule may be local, or may be part of a cloud-based storage system.

Abstract: Example apparatus and methods control an error correcting code (ECC) approach for data stored on a solid state device (SSD). The control may be based on a property (e.g., reliability, error state, speed) of an SSD, or on an attribute of the data to be stored. Approaches including a hybrid rateless Reed-Solomon ECC approach or a fountain code ECC approach may be selected. Example apparatus and methods may store padded portions of an ECC at different locations in an SSD. Example apparatus and methods may dynamically generate performance test data about the SSD, and dynamically control the ECC approach based on the performance test data. Different types or numbers of ECC may be produced, stored, and provided for different data sets stored at different SSDs or at different physical locations within an SSD. The SSD may be local, or may be part of a cloud-based storage system.

Abstract: A diagnostic tape (318) for use with a tape drive (310) having a tape head (322) includes a first tape section (430A) and a second tape section (430B). The first tape section (430A) and the second tape section (430B) are configured to move across the tape head (322) during use of the tape drive (310). The first tape section (430A) includes a first patterned data code (432A) that is indicative of a first spacing between the tape head (322) and the first tape section (430A). The second tape section (430B) includes a second patterned data code (432B) that is indicative of a second spacing between the tape head (322) and the second tape section (430B). The second patterned data code (432B) is different than the first patterned data code (432A). The diagnostic tape (318) can further include a tape head cleaning section (630F) including abrasive material (650) that is configured to move across the tape head (322) to clean the tape head (322).

Abstract: Embodiments disclosed herein provide systems, methods, and computer readable media to provide access to items of removable storage media identified using globally unique identifiers. In a particular embodiment, a method provides assigning a first globally unique identifier to a first item of removable storage media. The method further provides receiving a first request to access the first item. The first request includes the first globally unique identifier. In response to the first request, the method provides using the first globally unique identifier to determine a location of the first item from a plurality of removable storage media items and providing access to the first item.

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: Example apparatus and methods control a data storage system to store data in a self-describing logical data storage capsule using a logical cylindrical recording format. Example apparatus and methods assign a searchable, globally unique identifier to the capsule and associate the globally unique identifier with a user. The logical data storage capsule is migrated from a first data storage medium to a second data storage medium without translating or reformatting the data storage capsule. The data storage capsule contains information describing to a data storage device how to migrate the capsule without translating or reformatting the data storage capsule. Example apparatus and methods dynamically select an error correction approach for storing data in the data storage capsule, de-duplicate, and encrypt the data storage capsule. The data storage capsule may be local, or may be part of a cloud-based storage system.

Abstract: Example apparatus and methods control whether and when hybrid rateless Reed Solomon (RS) error correcting codes (ECC) for a message are produced, stored, and distributed. The control may be based on a property (e.g., reliability, error state, speed) of a message recipient. Example apparatus and methods may also control whether and when fountain codes for the message are produced, stored, and distributed. Once again, the control may be based on a property of a message or ECC recipient. Both the hybrid rateless RS ECC and the fountain codes may be produced from data stored in a modified RS matrix. The modified RS matrix may store row-centric error detection codes (EDC) instead of conventional cyclic redundancy check (CRC) characters. The modified RS matrix may store column-centric ECC that may be produced serially. Different types or numbers of ECC may be produced, stored, and provided for different messages stored at different recipients.

Abstract: Example apparatus and methods control an error correcting code (ECC) approach for data stored on a solid state device (SSD). The control may be based on a property (e.g., reliability, error state, speed) of an SSD, or on an attribute of the data to be stored. Approaches including a hybrid rateless Reed-Solomon ECC approach or a fountain code ECC approach may be selected. Example apparatus and methods may store padded portions of an ECC at different locations in an SSD. Example apparatus and methods may dynamically generate performance test data about the SSD, and dynamically control the ECC approach based on the performance test data. Different types or numbers of ECC may be produced, stored, and provided for different data sets stored at different SSDs or at different physical locations within an SSD. The SSD may be local, or may be part of a cloud-based 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: 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.