公开(公告)号：US20210191638A1

公开(公告)日：2021-06-24

申请号：US17135747

申请日：2020-12-28

Applicant: PURE STORAGE, INC.

Inventor： Nenad Miladinovic ,  Hari Kannan ,  Ronald Karr

IPC: G06F3/06

Abstract: A method for read voltage levels in flash memory is provided. The method includes determining to which set of pages or blocks of a flash memory device a word line connects, according to a flash memory device architecture. The method includes determining one or more optimum read voltage levels, for one or more pages of the flash memory device that are accessed by activating the word line, according to a specified number of bits per cell and the flash memory device architecture, and using the one or more optimum read voltage levels to access further pages in the set of pages or blocks of the flash memory device to which the word line connect.

公开(公告)号：US11016700B1

公开(公告)日：2021-05-25

申请号：US16527700

申请日：2019-07-31

Applicant: PURE STORAGE, INC.

Inventor： Steven Hodgson ,  Ronald Karr

IPC: G06F12/00 ,  G06F3/06 ,  G06F16/00 ,  G06F12/02

Abstract: Accumulating application-level statistics in a storage system that includes a plurality of block storage devices, including: identifying, from data stored on a block storage device, one or more sub-regions of the data stored on the block storage device that are associated with an application; and compiling, from statistics maintained for each of the one or more sub-regions of the stored data associated with the application, cumulative statistics for the application.

公开(公告)号：US10917471B1

公开(公告)日：2021-02-09

申请号：US16433124

申请日：2019-06-06

Applicant: PURE STORAGE, INC.

Inventor： Aswin Karumbunathan ,  Joshua Freilich ,  Naveen Neelakantam ,  Ronald Karr

IPC: H04L29/08 ,  G06F16/178 ,  G06F11/20

Abstract: Determining active membership among a set of storage systems, including: determining, by a cloud-based storage system among the set of storage systems, that a membership event corresponds to a change in membership to the set of storage systems synchronously replicating the dataset; applying, in dependence upon the membership event, one or more membership protocols to determine a new set of storage systems to synchronously replicate the dataset; and for one or more I/O operations directed to the dataset, applying the one or more I/O operations to the dataset synchronously replicated by the new set of storage systems.

公开(公告)号：US10789020B2

公开(公告)日：2020-09-29

申请号：US15966025

申请日：2018-04-30

Applicant: Pure Storage, Inc.

Inventor： Ronald Karr ,  Constantine Sapuntzakis ,  Mark McAuliffe ,  Farhan Abrol ,  Neil Vachharajani ,  Timothy Brennan

IPC: G06F3/06 ,  G06F11/14 ,  G06F11/20 ,  G06F11/10 ,  G06F11/30 ,  G06F11/07 ,  G06F11/16

Abstract: Staging data on a storage element integrating fast durable storage and bulk durable storage, including: receiving, at a storage element integrating fast durable storage and bulk durable storage, a data storage operation from a host computer; storing data corresponding to the data storage operation within fast durable storage in accordance with a first data resiliency technique; and responsive to detecting a condition for transferring data between fast durable storage and bulk durable storage, transferring the data from fast durable storage to bulk durable storage in accordance with a second data resiliency technique.

公开(公告)号：US10680932B1

公开(公告)日：2020-06-09

申请号：US15683823

申请日：2017-08-23

Applicant: Pure Storage, Inc.

Inventor： John Colgrove ,  Roland Dreier ,  David Grunwald ,  Steven Hodgson ,  Ronald Karr ,  Daquan Zuo

IPC: H04L12/721 ,  H04L29/08 ,  H04L12/803

Abstract: Managing connectivity to synchronously replicated storage systems, including: identifying a plurality of storage systems across which a dataset is synchronously replicated; identifying a host that can issue I/O operations directed to the dataset; identifying a plurality of data communications paths between the host and the plurality of storage systems across which a dataset is synchronously replicated; identifying, from amongst the plurality of data communications paths between the host and the plurality of storage systems across which a dataset is synchronously replicated, one or more optimal paths; and issuing, to the host, an identification of the one or more optimal paths.

公开(公告)号：US10671408B1

公开(公告)日：2020-06-02

申请号：US15800857

申请日：2017-11-01

Applicant: Pure Storage, Inc.

Inventor： John Colgrove ,  Thomas Gill ,  David Grunwald ,  Ronald Karr ,  Aditya Sethuraman ,  Kunal Trivedi ,  Eric Tung

IPC: G06F16/00 ,  G06F9/445 ,  G06F11/07 ,  G06F16/27

Abstract: Automatic storage system configuration for mediation services that includes: determining that a particular storage system of the storage systems is not configured to request mediation from a mediation target for mediation between storage systems synchronously replicating a dataset; requesting, by the particular storage system from a configuration service, configuration information indicating one or more service handles for a mediation service; and configuring, in dependence upon the one or more service handles received from the configuration service, a mediation handler to communicate with the mediation service responsive to detecting a communication fault with one of the storage systems.

公开(公告)号：US20200081648A1

公开(公告)日：2020-03-12

申请号：US16389675

申请日：2019-04-19

Applicant: Pure Storage, Inc.

Inventor： Andrew R. Bernat ,  Peter E. Kirkpatrick ,  Gordon James Coleman ,  Wei Tang ,  Ronald Karr

IPC: G06F3/06 ,  G06F11/07

Abstract: A storage system includes solid-state storage devices and a storage controller operatively coupled to the solid-state storage devices, the storage controller including a processing device, the processing device to receive, from a solid-state storage device of the solid-state storage devices, an indication of an occurrence of triggering event associated with data stored at a first data block of the solid-state storage device. In response to receiving the indication of the occurrence of the triggering event, a second data block of the solid-state storage device is identified for storage of the data. A command in transmitted to the solid-state storage device that includes address information associated with the second data block of the solid-state storage device for storage of the data, wherein the command causes the solid-state storage device to program the data to the second data block.

公开(公告)号：US10552090B2

公开(公告)日：2020-02-04

申请号：US15697540

申请日：2017-09-07

Applicant: Pure Storage, Inc.

Inventor： Ronald Karr ,  Ethan Miller ,  Constantine Sapuntzakis

IPC: G06F3/06 ,  G06F11/14

Abstract: Solid state drives with multiple types of addressable memory, where the solid state drives include: a first memory component comprising a plurality of nonvolatile registers; a second memory component comprising flash memory; and one or more controllers configured to: receive a write operation, wherein the write operation indicates a first portion of data to be written to the flash memory and indicates a second portion of data to be written to one or more of the plurality of registers; and atomically write the first portion of the data to the flash memory and the second portion of the data to the one or more of the plurality of registers.

公开(公告)号：US20190391872A1

公开(公告)日：2019-12-26

申请号：US16553387

申请日：2019-08-28

Applicant: PURE STORAGE, INC.

Inventor： Peter E. Kirkpatrick ,  Ronald Karr

IPC: G06F11/10 ,  G11C29/52

Abstract: In one implementation, a method comprises storing verification data and erasure codes separately in a plurality of storage devices. The method further comprises determining, by a processing device, whether data to be written to the plurality of storage devices is lost or corrupted using the verification data and the erasure codes.

公开(公告)号：US10452297B1

公开(公告)日：2019-10-22

申请号：US15339684

申请日：2016-10-31

Applicant: Pure Storage, Inc.

Inventor： Ronald Karr ,  Ethan L. Miller ,  Cary A. Sandvig ,  Feng Wang ,  Wei Zhang

IPC: G06F3/06

Abstract: The method and system generates a first deduplication map (DDM) level including first data and a second DDM level including second data. The method or apparatus also generates a first index summary (IS) level corresponding to the first DDM level and a second IS level corresponding to the second DDM level. The method or apparatus merges the first data of the first DDM level and the second data of the second DDM level to generate a third DDM level comprising third data. The method or apparatus in response to generating the third DDM level, generates a third IS level to accelerate lookup within the third DDM level.