Western Digital Technologies, Inc.

Grant C Mackey

Jun Xu

Robin O'Neill

Jie Yu

Robert P Ryan

James N Malina

Nils E Larson

Junpeng Niu

Wei Xi

Mikael Mortensen

Shaun Astarabadi

Sanghoon Chu

An apparatus is provided that includes a memory system that includes a memory controller coupled to a storage device capable of streaming data at a first data rate. The memory controller is configured to read a first amount of input data from the storage device at an input data rate equals the first data rate, and provide the first amount of input data at the input data rate to a hardware circuit. The hardware circuit is configured to filter the first amount of input data to provide a second amount of output data at an output data rate, the second amount of output data less than the first amount of input data, the output data rate less than the input data rate. The hardware circuit filters the first amount of input data without repeatedly moving data back and forth between the storage device, a memory buffer, and the hardware circuit.

Hardware accelerator circuits for near storage compute systems

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

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 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 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.

Growing community of inventors

Irvine, CA, United States of America

Grant C Mackey