Pure Storage, Inc.

Symantec Operating Corporation

Veritas Operating Corporation

Symantec Corporation

Symantec Operating Company

John Colgrove

Ethan L Miller

John Martin Hayes

Ronald S Karr

Oleg Kiselev

Bo Hong

Cary A Sandvig

Feng Wang

Craig Harmer

David A Grunwald

Anand A Kekre

Robert H Lee

Christopher Golden

John D Davis

Constantine P Sapuntzakis

Peter Vajgel

Joseph S Hasbani

Par Botes

Naveen Neelakantam

Jianting Cao

Peter E Kirkpatrick

Sergey Zhuravlev

Lydia Mai Do

Igor Ostrovsky

Thomas Gill

Ron Karr

Andrew R Bernat

Taher Vohra

Neil A Vachharajani

Graham Bromley

Joshua Robinson

Thomas Lanzatella

Blaine T Cuykendall

Matthew Paul Fay

Vinay Perneti

Terence W Noonan

Grigori Inozemtsev

Joshua Freilich

Aswin Karumbunathan

Alan Stuart Driscoll

Steven P Hodgson

Malcolm Sharpe

Allen Unueco

Ganesh Ramanarayanan

Roland Dreier

Steve Hodgson

Daquan Zuo

Patrick D Lee

Kunal Trivedi

Niranjan Sanjiv Pendharkar

Marco Sanvido

Mark L McAuliffe

Benjamin Scholbrock

Steven Michael Umbehocker

Andrew Kleinerman

Xiaohui Wang

Charles Silvers

Larry Touchette

Martin Harriman

Timothy W Brennan

Raghu Krishnamurthy

Benjamin P Borowiec

Joshua P Robinson

Brian Gold

Ankur P Panchbudhe

Luke Paulsen

Connor Brooks

Zoheb Shivani

Deepak Tawri

Logan Jennings

Aaron Dailey

Lawrence Mertes

Deepak Chawla

Hari Kannan

Ying Gao

Chirag Deepak Dalal

Richard A Hankins

Angshuman Bezbaruah

Yuhong Mao

Vaijayanti Rakshit Bharadwaj

Boris Feigin

Pradip Kulkarni

Vikas Gupta

Robert Baird

Samir Desai

Andrew Kutner

Andrew Miller

Wei Zhang

Weibao Wu

Milind Vithal Borate

Shantanu R Gupta

Gordon James Coleman

Dhrubajyoti Borthakur

Kalaivani Arumugham

Michael E Root

Damian Pablo Yurzola

Neil Buda Vachharajani

Poonam P Dhavale

Scott Douglas Kaiser

Redundant array of independent drives (RAID) sub-stripes are formed across one or more solid-state storage devices of storage nodes of a storage system. The RAID sub-stripes include corresponding shards of data to be stored at the solid-state storage devices, wherein at least one of the RAID sub-stripes has at least two of the corresponding shards of data on a same storage node. At least one global parity shard is generated for the RAID sub-stripes. The at least one global parity shard is to be stored on a first storage node that is different from each of the same storage nodes storing the at least two of the corresponding shards of data.

Intelligently forming data stripes including multiple shards in a single failure domain

A method of cache management, the method comprising: identifying, among a plurality of storage items, storage items having an access count above a first threshold to generate a set of storage items; identifying, among the set of storage items, storage items having an updated access count above a second threshold to generate a subset of storage items, wherein, for each storage item, the updated access count is dependent upon a number of accesses subsequent to generating the set of storage items; and adding the storage items of the subset of storage items to a cache.

Cache management based on storage access

Adjusting storage capacity in a computing system that includes a computing device configured to send access requests to a storage device characterized by a first storage capacity, including: reducing data; determining, in dependence upon an amount of storage capacity saved by reducing the data, an updated storage capacity for the storage device; and exporting an updated storage capacity to the computing device.

Representing storage capacity based on data reduction levels

Creating a replica of a storage system, including: receiving, by a first storage system from a computing device, data to be stored on the first storage system; reducing, by the first storage system, the data using one or more data reduction techniques; sending, from the first storage system to the second storage system, the reduced data, wherein the reduced data is encrypted; and sending, from the second storage system to a third storage system, the reduced data, wherein the reduced data is encrypted.

Maintaining encryption during storage system replication

Supporting multiple replication schemes across distinct network layers, including: replicating, over a first type of network messaging layer, data between a first storage system and a second storage system; selecting a different messaging layer for data replication; and replicating, over a second type of network messaging layer, data between the first storage system and the second storage system.

Switching between network layers for replication

Delaying deletion of a dataset, including: determining that deletion of a dataset at a storage system should be delayed by an amount of time representing a time period between a requested deletion time and a delayed deletion time; and delaying deletion of the dataset based on the determined amount of time.

Delaying requested deletion of datasets

Utilizing a non-repeating identifier to encrypt data, including: receiving a request to write data to a storage device; selecting a segment-offset pair where the data will be stored, where the selected segment-offset pair is unique to every other segment-offset pair utilized during the lifetime of the storage device; and encrypting the data in dependence upon an identifier of the segment-offset pair.

Encrypting data using non-repeating identifiers

Intra-block error correction including generating reconstructed sub-portions of a portion of a dataset that is distributed into a plurality of portions that are stored on different storage devices of the storage system, wherein the dataset indicates a first number of errors that is greater than a second number of parity data portions of the dataset, determining that a sub-portion of the dataset does not match a corresponding reconstructed sub-portion of the dataset; and based on the determination, replacing the sub-portion of the dataset with the reconstructed sub-portion of the dataset.

Using intra-block redundancy calculations

Synchronous replication between storage systems with virtualized storage includes: assigning a virtual volume datastore to a pod, the pod including a management object, the virtual volume datastore including virtual machine data; stretching the pod from a first storage system to a second storage system, including copying the virtual machine data from the first storage system to the second storage system; and synchronously replicating access operations of the virtual machine data of the pod between the first and second storage systems.

Virtual volume-based replication

A uniform model for distinct types of data replication, including receiving, at a source data repository, an update to a dataset; generating, based on the update to the dataset, both metadata describing the update to the dataset and also a metadata representation of the dataset; and initiating, based on the same metadata describing the update to the dataset and also based on the same metadata representation of the dataset, either a first type of data replication or a second type of data replication from among a plurality of types of data replication.

Uniform model for distinct types of data replication

A computer system comprising: a data storage medium comprising a plurality of storage devices configured to store data; and a data storage controller coupled to the data storage medium; wherein the data storage controller is configured to: determine a target number of storage devices in a group of storage devices in a storage system that may exhibit variable I/O response times; detect one or more conditions associated with the group of storage devices; and after detecting the one or more conditions, change the target number of storage devices that may exhibit variable I/O response times.

Balancing the number of read operations and write operations that may be simultaneously serviced by a storage system

Selecting storage resources based on data characteristics, including: determining, for data that is stored within a storage system that includes multiple types of data storage, a storage type to use for the data, wherein: the data is associated with one more snapshots that are stored in the storage system, and the determination is based on whether the data that is stored in at least one volume in the storage system, wherein one storage type is selected if the data is stored in at least one volume and another storage type is selected if the data is not stored in at least one volume; and storing the data in a storage device associated with the determined storage type.

Selecting storage resources based on data characteristics

Utilizing multiple redundancy schemes within a unified storage element, including: receiving, in a storage system at a unified storage element that integrates both fast durable storage and bulk durable storage, a data storage operation from a host computer; storing, in accordance with a first data resiliency technique that corresponds to a RAID N+R format, data corresponding to the data storage operation within the fast durable storage of the unified storage element; and responsive to determining that the complete RAID stripe has been written to the fast durable storage, moving a portion of the stored data from the fast durable storage to the bulk durable storage of the unified storage element, the bulk durable storage storing the data in accordance with a second data resiliency technique that corresponds to a RAID M+R format, wherein M is different from N.

Maintaining multiple redundancy schemes across different storage types

Synchronously replicating a dataset across cloud-based storage systems, including adding a cloud-based storage system to a set of storage systems that the dataset is synchronously replicated across, where access operations are applied to the dataset equivalently through all storage systems in the set, all storage systems in the set store a separate copy of the dataset, and operations to modify the dataset performed and completed through any of the storage systems in the set are reflected in access operations to read the dataset, the cloud-based storage system including one or more cloud computing instances executing a storage controller application, a virtual drive layer that includes one or more cloud computing instances with local storage for storing at least a portion of the dataset as block data, and an object storage layer for storing at least a portion of the dataset as object data.

Replication utilizing cloud-based storage systems

Systems and method for implementing deduplication process based on performance analyses. The system may include a processing device to determine a first performance metric associated with retrieving a second stored data block that is within a specified range of a duplicate of the first data block and a second performance metric associated with retrieving a hash value corresponding to the second stored data block. The processing device further to retrieve the second stored data block within a specified range of the duplicate of the first data block in response to the first performance metric not exceeding the second performance metric.

Deduplication selection and optimization

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Los Altos, CA, United States of America

John Colgrove