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Quantum Corporation patents


Recent patent applications related to Quantum Corporation. Quantum Corporation is listed as an Agent/Assignee. Note: Quantum Corporation may have other listings under different names/spellings. We're not affiliated with Quantum Corporation, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "Q" | Quantum Corporation-related inventors


Log structured block device for hard disk drive

Example apparatus and methods provide a log structured block device for a hard disk drive (HDD). Data that is to be stored on an HDD is serialized and written as a series of data blocks using a sequential write. Information about where individual data blocks were supposed to be written... Quantum Corporation

Joint de-duplication-erasure coded distributed storage

Methods and apparatus deduplicate and erasure code a message in a data storage system. One example apparatus includes a first chunking circuit that generates a set of data chunks from a message, an outer precoding circuit that generates a set of precoded data chunks and a set of parity symbols... Quantum Corporation

Removable media based object store

Embodiments disclosed herein provide systems, methods, and computer-readable media to implement an object store with removable storage media. In a particular embodiment, a method provides identifying first data for storage on a first removable storage medium and designating at least a portion of the first data to a first data... Quantum Corporation

Dynamically controlling erasure code distribution in an object store

Example apparatus and methods monitor conditions in an object storage system. The conditions monitored may include a load balance measure in the system, a capacity balance measure in the system, a fault tolerance measure in the system, or a usage pattern measure in the system. A distribution plan or redistribution... Quantum Corporation

Garbage collection and defragmentation for solid state drives (ssd) and shingled magnetic recording (smr) drives

Example apparatus and methods provide improved reclamation, garbage collection (GC) and defragmentation (defrag) for data storage devices including solid state drives (SSD) or shingled magnetic recording (SMR) drives. An erasure code (EC) layer that facilitates logically or physically erasing data from the SSD or SMR as a comprehensive GC or... Quantum Corporation

Data deduplication with adaptive erasure code redundancy

Example apparatus and methods combine erasure coding with data deduplication to simultaneously reduce the overall redundancy in data while increasing the redundancy of unique data. In one embodiment, an efficient representation of a data set is produced by deduplication. The efficient representation reduces duplicate data in the data set. Redundancy... Quantum Corporation

Method for reliable and efficient filesystem metadata conversion

A method for converting metadata in a hierarchical configuration within a filesystem from a first format to a second format includes reading metadata in the first format within the hierarchical configuration; writing the metadata from the hierarchical configuration into a flat file; and writing the metadata back into the hierarchical... Quantum Corporation

Object synthesis

Apparatus, methods, and other embodiments associated with object synthesis are described. One example apparatus includes logic for identifying a block in a data de-duplication repository and for identifying a reference to the block. The apparatus also includes logic for representing a source object using a first named, organized collection of... Quantum Corporation

Data aware deduplication object storage (dados)

Embodiments include a data aware deduplicating object store. The data aware deduplicating data store includes a consistent hashing logic that manages a consistent hashing architecture for the object store. The consistent hashing architecture includes a metadata ring and a bulk ring. The consistent hashing architecture may be a multiple ring... Quantum Corporation

Metadump spatial database system

Example apparatus and methods create and maintain a functional mirror of file system metadata for an active file system. The functional mirror may be implemented as a set of feature vectors in a feature space stored in a spatial database that allow a journal functionality for information received from the... Quantum Corporation

Storage conditioning with intelligent rebuild

Storage conditioning for a data storage system having D data storage devices (DSDs) is provided. E erasure codes (ECs) for an object are stored in the system, D>E. A map of d E-sized vectors of the D DSDs is produced. A DSD appears in e vectors. The ratio d/e is... Quantum Corporation

File level recovery using virtual machine image level backup with selective compression

Example apparatus and methods process virtual machine image level backups that may include files that are compressed and files that are not compressed. Example apparatus and methods may produce virtual machine image level backups by selectively compressing some files associated with the image while leaving other files in their uncompressed... Quantum Corporation

Data replica control

A replica control system includes software to control replication in virtual environments. The replica control system identifies a plurality of data blocks within an underlying storage volume in response to a request to update a replica of a target storage volume, identifies changed data blocks of the plurality of data... Quantum Corporation

Sequential access storage and data de-duplication

An example method includes determining a configuration of two or more partitions for a sequential access medium. At least one partition stores data de-duplication data structures while at least one other partition stores a repository of unique data blocks associated with the data structures. The method also includes controlling a... Quantum Corporation

Dynamically configuring erasure code redundancy and distribution

Example apparatus and methods monitor conditions in a tiered storage system. The conditions monitored may include the availability of different numbers and types of devices including an erasure code based object storage system. The conditions monitored may also include the availability and type of devices available to the erasure code... Quantum Corporation

Mitigating the impact of a single point of failure in an object store

Example apparatus and methods distribute ranges or erasure codes associated with ranges to reduce or minimize the impact of a single point of failure in an object store. Erasure codes associated with related ranges to be stored in an object store may be accessed and selectively distributed to different storage... Quantum Corporation

Media library including storage media retrieval assembly

A retrieval assembly (22) for moving storage media (16) within a media library (10), the media library (10) including a rack assembly (20) having a first rack (20A) and a spaced apart second rack (20B), comprises a picker system (32), an assembly base (30), a first mover (28A), a second... Quantum Corporation

Media library including storage media retrieval assembly

A retrieval assembly (22) for moving storage media (16) within a media library (10), the media library (10) including a rack assembly (20) having a first rack (20A) and a spaced apart second rack (20B), comprises a picker system (32), an assembly base (30), a first mover (28A), a second... Quantum Corporation

Metadata storage in unused portions of a virtual disk file

Embodiments disclosed herein provide systems and method for storing metadata to unused portions of a virtual disk file. In a particular embodiment, a method provides selecting a virtual disk file stored on a data storage volume and identifying unused portions of the virtual disk file. The method further provides writing... Quantum Corporation

Adaptive storage management for optimizing multi-tier data storage system

Embodiments provide adaptive storage management for optimizing multitier data storage. A storage manager may interact with storage decision advisors. The manager may adaptively make storage management decisions (e.g., flush, evict, recall, delete) after considering recommendations from and the credibility of the storage decision advisors. The manager may update the credibility... Quantum Corporation

Heuristic journal reservations

Example apparatus and methods reserve space in a journal using an observation based approach instead of a fixed sized approach or a worst case scenario approach. One example method receives a request to allocate space in a journal to support a file system transaction. The example method reserves an amount... Quantum Corporation

Adaptive erasure codes

Methods, apparatus, and other embodiments associated with adaptive use of erasure codes for distributed data storage systems are described. One example method includes accessing a message, where the message has a message size, selecting an encoding strategy as a function of the message size, data storage device failure statistics, data... Quantum Corporation

File system with multi-class in situ tiered archiving

Example apparatus and methods provide a file system that stores files in multiple different logical units. The logical units are associated with different classes of devices. The file system interacts with the logical units through block-based interfaces. The file system is a single file system that spans the multiple logical... Quantum Corporation








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