Western Digital Technologies, Inc.

Creative Technology Corporation

Nanyang Technological University

Kent Ridge Digital Labs

Jun Xu

Jie Yu

Wei Xi

Grant C Mackey

Junpeng Niu

Robin O'Neill

Guoxiao Guo

Robert P Ryan

James N Malina

Dean Mitcham Jenkins

Lei Zhang

Eric S Bjornson

Nils E Larson

Jianguo Zhou

David W Chew

Scott A Rader

Ling Chih Wei

Zhengyi Zhao

Huayun Zhang

Brandon Dement

William Bernard Boyle

Teck Chee Lee

Cuntai Guan

Shaun Astarabadi

Sanghoon Chu

Michael Troy Nicholls

Haizhou Li

Jianyi Wang

Danny J Kastler

Jie Wan

Hongyu Chen

Miaoxin Yang

Yuhua Feng

Systems and methods are disclosed for providing secure access to a data storage device. A user may move the data storage device (e.g., wave, twist, etc.). The data storage device may determine whether the motions valid and may allow access to the data storage device (e.g., to non-volatile memory of the data storage device) when the motions are valid.

Data storage device with secure access based on motions of the data storage device

A network device includes memory with permanent storage. A request for information is received from a user device. In response to determining that an erasure encoded version of the requested information is not stored in the memory of the network device, the requested information is requested to be transmitted from a storage external to the network device and partially received. In response to determining that an amount of the partially received requested information does not satisfy an erasure encoding threshold, it is determined whether the erasure encoding threshold can be satisfied within a time duration. If so, the partially received requested information is erasure encoded, stored in the permanent storage, and transmitted. If not, the requested information is requested to be retransmitted from the storage external to the network device.

Integrated erasure coding for data storage and transmission

An example system may comprise a network-attached storage device including a base station having a hardware interface including a drive port and a connectivity port; a modular storage drive attachable to and detachable from the drive port; and a modular wireless adapter attachable to and detachable from the connectivity port. The portable storage device is formable by detaching the modular storage drive and the modular wireless adapter from the hardware interface of the network-attached storage device, and coupling the modular storage drive and the modular wireless adapter to one another via a portable hardware interface. Further, a rechargeable modular power unit is removable from the base station and attachable to and detachable from a power port of the network-attached storage device.

Modularized multi-purpose storage system

Systems and methods are disclosed for providing secure access to a data storage device. A user may provide tap inputs, such as taps or knocks, on an enclosure of the data storage device. The data storage device may determine whether the tap inputs are valid and may allow access to the data storage device (e.g., to non-volatile memory of the data storage device) when the tap inputs are valid.

Data storage device with secure access based on tap inputs

Embodiments of network devices for content distribution are described. In some embodiments, an edge network device integrates network coding for content distribution with erasure coding for data storage. Embodiments of methods of integrating network coding and erasure coding are also disclosed. In some embodiments, an edge network device can determine content distribution and storage for content based on one or more penalty functions that assess storage capacity, computational power, user demand, and/or network bandwidth for optimal resource usage. In some embodiments, an edge network device creates fragments of content and transmits a subset of the fragments for early distribution. In response to a user request for the content, the edge network device can transmit the remaining fragments to the user device for the user device to reconstruct the original content.

Systems and methods are disclosed for accessing data on a storage system. An apparatus, such as a data storage device or a computing device, may include a memory configured to store data. The apparatus is configured to determine an importance level for a file to be stored in the storage system. The data storage system includes one or more private storage clouds and one or more public storage clouds. The apparatus is also configured to generate a set of recovery data chunks based on the file and the importance level. The apparatus is further configured to store the set of recovery data chunks in the set of public storage clouds. The apparatus is further configured to store at least a portion of the file in the private storage cloud.

Hybrid data storage system with private storage cloud and public storage cloud

The present invention refers to a Raman active composite material comprising a metal particle; a coating layer of a Raman active molecule bound to the metal particle; and an encapsulating layer of an amphiphilic polymer bound to the metal particle. The present invention also refers to methods of manufacturing a Raman active composite material described herein and their uses.

Polymer encapsulated particles as surface enhanced Raman scattering probes

Systems and methods are disclosed for storing multimedia assets (or other data objects) in a storage array. Portions of the multimedia asset may be stored on different chunks of the storage drives in the storage array based on an access frequency level for a portion, an importance level for the portion, a reliability score for a chunk, and a performance score for the chunk.

Data storage system with multimedia assets

A data storage system may include one or more storage arrays. Each storage array may include a first set of solid-state drives and a first set of striped hard disk drives. Each solid-state drive of the first set of solid-state drives has a first data throughput and the set of stripe hard disk drives has a second data throughput. The second data throughput of the first set of striped hard disk drives is within a threshold throughput of the first data throughput. The data storage system also includes a processing device configured to receive an access request to write first data to the storage array and determine a read access frequency of the first data. The processing device may also be configured to determine a write access frequency of the first data and write the first data to the first set of solid-state drives or the first set of striped hard disk drives, based on the read access frequency and the write access frequency.

Hybrid data storage array

A data storage system may include a first storage pool and a second storage pool, with the second storage pool comprising larger, slower storage drives. The data storage system may associate, with a first data, a first parameter corresponding to an access frequency for short term reads, a second parameter corresponding to access frequency for long term reads, a third parameter corresponding to an access frequency for short term writes, and a fourth parameter corresponding to an access frequency for long term writes. The data storage system may then determine whether to store the first data on the first storage pool or the second storage pool based on at least one of the first parameter, the second parameter, the third parameter, and the fourth parameter.

Unified tier and cache structure

An apparatus includes: an adaptive declustered RAID array configured of data storage devices (DSDs), the DSDs comprise data chunks allocated as data, a local parity, or a global parity; and a controller configured to generate a reliability indicator reflective of a reliability status of at least a portion of the adaptive declustered RAID array for reallocating the data chunks by dynamically increasing or decreasing the data chunks allocated as the local parity, the global parity, or a combination thereof.

Electronic system with declustered data protection by parity based on reliability and method of operation thereof

Embodiments of a declustered, fault-tolerant array of storage devices for use with computer, networked, cloud-based, and other data storage applications are described. In some embodiments, the array generates a chunk group mapping with a high utilization of storage device space, provides evenly distributed hot spares, supports multiple erasure schemes including Reed-Solomon codes and Local Reconstruction Codes, and provides high storage device rebuild speed after storage device failure. Embodiments of methods of generating chunk group mappings are also disclosed. In some embodiments, chunk group mappings are determined based on the desired erasure scheme, the number of storage devices connected to the declustered, fault-tolerant array of storage devices, and a generated balanced incomplete block design or a generated partial balanced incomplete block design. Chunk group mappings are stored as a multi-level lookup table which includes at least a first erasure scheme pattern table and at least a second chunk group lookup table.

Declustered array of storage devices with chunk groups and support for multiple erasure schemes

Systems and methods are disclosed for accessing data on a storage system. An apparatus, such as a data storage device or a computing device, may include a memory configured to store data. The apparatus is configured to receive a request for a file stored in a storage system. The storage system includes a private storage cloud and a set of public storage clouds. The apparatus is also configured to determine whether the file is retrievable from the set of public storage clouds. If the file is retrievable from the set of public storage clouds the apparatus may determine whether access to the set of public storage clouds is faster than access to the private storage cloud and may retrieve the file from one or more of the private storage cloud and the set of public storage clouds.

Write commands are received for a Data Storage Device (DSD) to store write data in a plurality of corresponding write locations on at least one disk of the DSD. At least a portion of the write data is cached in at least one Media Based Cache (MBC) region of the at least one disk based on a write cache policy for determining which write data is eligible for caching in the at least one MBC region. The at least one MBC region is used to cache data to be stored in other locations on the at least one disk. During an active time period when host commands are performed on the at least one disk, a portion of an I/O bandwidth for performing commands is used to copy the at least a portion of the write data to corresponding write locations of the plurality of corresponding write locations.

Growing community of inventors

Singapore, Singapore

Jun Xu