公开(公告)号：US20180173731A1

公开(公告)日：2018-06-21

申请号：US15387603

申请日：2016-12-21

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Siamak Nazari ,  Jin Wang ,  Srinivasa D. Murthy ,  Roopesh Kumar Tamma

IPC: G06F17/30

CPC classification number: G06F16/215 ,  G06F3/0608 ,  G06F3/0641 ,  G06F3/067 ,  G06F16/2255 ,  G06F16/2365

Abstract: An example storage system may include storage media and a storage controller. The storage controller may be to establish virtual volumes, private data stores, and a deduplication data store, each being a virtual storage space of the storage media, wherein each of the private data stores is associated with one of the virtual volumes and the deduplication data store is shared among the virtual volumes. The storage controller may, in response to receiving input data that is to be stored in a given one of the virtual volumes, determine a signature for the input data and select between storing the input data in the private data store associated with the given one of the virtual volumes and storing the input data in the deduplication data store. The storage controller may select where to store the input data based on whether a metadata storage location addressed by a first portion of the signature includes valid metadata, and, if so: whether the metadata includes a back-pointer to one of the virtual volumes, and whether a second portion of the signature matches a key included in the metadata.

公开(公告)号：US20170300266A1

公开(公告)日：2017-10-19

申请号：US15514075

申请日：2014-09-25

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Jin Wang ,  Siamak Nazari ,  Roopesh Kumar Tamma ,  Srinivasa D Murthy

IPC: G06F3/06 ,  G06F17/30

CPC classification number: G06F3/0641 ,  G06F3/0608 ,  G06F3/0644 ,  G06F3/0673 ,  G06F11/08 ,  G06F11/14 ,  G06F11/1453 ,  G06F17/30156 ,  G06F17/30371 ,  G06F17/30377

Abstract: Example implementations relate to data chunk storage. For example, an implementation includes an apparatus that includes a processor. The processor is to receive a first data chunk from a source device and to generate a first fingerprint of the first data chunk. In response to a determination that the first fingerprint matches a second fingerprint of a second data chunk, the processor is to select a storage pool from a plurality of storage pools at a storage device to store the first data chunk based on the first data chunk and based on the second data chunk. The plurality of storage pools includes a first storage pool associated with first particular data chunks with non-colliding fingerprints and a second storage pool associated with second particular data chunks with colliding fingerprints.

公开(公告)号：US20200183601A1

公开(公告)日：2020-06-11

申请号：US16215962

申请日：2018-12-11

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Roopesh Kumar Tamma ,  Marcel Furtado Almeida

IPC: G06F3/06 ,  G06F9/455

Abstract: In some examples, a system converts a virtual volume from a first volume type to a second volume type without modifying the virtual volume, the converting comprising accessing a source metadata associated with the virtual volume, the source metadata including information for the first volume type, and generating a destination metadata associated with the virtual volume, the destination metadata including information for the second volume type. While the virtual volume is being converted from the first volume type to the second volume type, the system processes a write operation that accesses a portion of the virtual volume and changes data in the accessed portion of the virtual volume.

公开(公告)号：US10209906B2

公开(公告)日：2019-02-19

申请号：US15033189

申请日：2013-10-31

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Roopesh Kumar Tamma ,  Siamak Nazari ,  Ajitkumar A. Natarajan

IPC: G06F13/36 ,  G06F15/167 ,  G06F3/06 ,  G06F12/0811 ,  G06F13/28

Abstract: A technique includes receiving a command in a target port, where the command is provided by an initiator and is associated with a write operation. The technique includes, in response to the command, using the target to process a data transfer for the initiator associated with the write operation. The processing includes, based on a characteristic of the command, selectively using memory for the transfer pre-allocated by a storage array controller prior to receipt of the command by the target port or requesting an allocation of memory for the transfer from the storage array controller.

公开(公告)号：US20180285074A1

公开(公告)日：2018-10-04

申请号：US15476697

申请日：2017-03-31

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Gurinder Shergill ,  Roopesh Kumar Tamma ,  Thomas H. Mariette

IPC: G06F5/14 ,  G06F3/06 ,  G06F13/28 ,  G06F13/16

CPC classification number: G06F5/14 ,  G06F3/061 ,  G06F3/0659 ,  G06F3/067 ,  G06F5/06 ,  G06F13/1673 ,  G06F13/28 ,  G06F2205/123 ,  G06F2205/126

Abstract: Example method includes: negotiating, with a client device, a number of simultaneous I/O commands allowed in a single session between a storage device and the client device; pre-allocating a number of immediate data buffers for the single session based on the negotiated number of simultaneous I/O commands; receiving a write I/O command with immediate data, wherein the immediate data is transmitted within a single PDU as the I/O command; transitioning the pre-allocated buffers from a network interface state to a driver state in an atomic operation, the driver state enabling the pre-allocated buffers to be accessed by a driver layer of the storage device exclusively, and the atomic operation preventing other I/O commands from transitioning the network interface state of the pre-allocated buffers until the atomic operation is completed; and writing the immediate data to the pre-allocated buffers that are in the driver state.

公开(公告)号：US20170075625A1

公开(公告)日：2017-03-16

申请号：US15120826

申请日：2014-02-24

Applicant: HEWLETT-PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Siamak Nazari ,  Roopesh Kumar Tamma ,  Ajitkumar A Natarajan

IPC: G06F3/06 ,  G06F13/28

Abstract: A port processor to receive a read command in a target port. In response, use the target to process a data transfer that includes use of memory for the read transfer allocated by a storage array controller prior to receipt of the read command by the target port or while processing the data transfer and selectively mark such memory as repurposable. The port processor to receive a write command in the target port. In response to receipt of the write command, use the target to process a data transfer for the initiator associated with the write operation, wherein the process includes use of memory that the storage array controller pre-allocated or allocated based on receipt of the read command by the target port for the transfer to the storage array controller and marked as repurposable.

Abstract translation: 端口处理器，用于在目标端口中接收读取命令。 作为响应，使用目标处理数据传输，包括在由目标端口接收到读取命令之前或在处理数据传输时选择性地标记存储器阵列控制器分配的读取传输的内存，并选择性地标记可重用的内存 。 端口处理器在目标端口中接收写命令。 响应于接收到写入命令，使用目标来处理与写入操作相关联的发起者的数据传输，其中该处理包括使用存储器，其中存储阵列控制器基于读取命令的接收而被预分配或分配 由目标端口转移到存储阵列控制器并标记为可重复使用。

公开(公告)号：US20160350012A1

公开(公告)日：2016-12-01

申请号：US15114765

申请日：2014-03-20

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Roopesh Kumar Tamma ,  Jin Wang ,  Siamak Nazari ,  Srinivasa D Murthy

IPC: G06F3/06

CPC classification number: G06F3/0619 ,  G06F3/0608 ,  G06F3/061 ,  G06F3/0647 ,  G06F3/065 ,  G06F3/0665 ,  G06F3/0689 ,  G06F12/0866 ,  G06F2212/466

Abstract: Techniques to copy data from a source region to a destination region, and to update in cache a source region timestamp and a destination region timestamp.

Abstract translation: 将数据从源区域复制到目的地区域的技术，以及在缓存中更新源区域时间戳和目标区域时间戳。