公开(公告)号：US11386118B2

公开(公告)日：2022-07-12

申请号：US16655376

申请日：2019-10-17

Applicant: EMC IP Holding Company LLC

Inventor： Jehuda Shemer ,  Arieh Don ,  Saar Cohen

IPC: G06F16/27 ,  G06F11/14

Abstract: Systems and methods for replicating data from storage. Snapshots are taken on a consistency group of volumes and are stored in snapshot volumes. Changes to the data stored in the volumes are identified from the snapshots and the changes are written to a journal. The journal allows the changes to be replicated to a virtual replication system and a physical replication system. The journal can be replicated to different systems, including physical and virtual systems, by exposing the same journal in different manners.

公开(公告)号：US20220215084A1

公开(公告)日：2022-07-07

申请号：US17143560

申请日：2021-01-07

Applicant: EMC IP Holding Company LLC

Inventor： Efi Levi ,  Boris Giterman ,  Arieh Don

IPC: G06F21/45 ,  H04L29/06 ,  G06F1/12

Abstract: An apparatus comprises at least one processing device that is configured to control delivery of input-output operations from a host device to a storage system over selected ones of a plurality of paths through a network. The at least one processing device is further configured to generate a plurality of authentication tokens over time utilizing seed information of the host device, and for each of one or more of the input-output operations, to incorporate a particular one of the authentication tokens into the input-output operation, to send the input-output operation to the storage system, and to receive an indication from the storage system, responsive to the input-output operation sent to the storage system, as to whether or not the authentication token incorporated into the input-output operation matches a corresponding authentication token generated by the storage system. The at least one processing device illustratively comprises at least a portion of the host device.

公开(公告)号：US20220188330A1

公开(公告)日：2022-06-16

申请号：US17684071

申请日：2022-03-01

Applicant: EMC IP Holding Company LLC

Inventor： Sunil Kumar ,  Vinay Rao ,  Boaz Michaely ,  Arieh Don

IPC: G06F16/27 ,  G06F9/455 ,  G06F16/22

Abstract: In one example, a method involves performing an initial discovery process that includes querying a storage array, and identifying, based on the query, one or more hosts that are registered with the storage array. This initial discovery process is performed automatically without requiring user action to identify the one or more hosts. The method additionally includes presenting a list of discovered hosts, receiving a selection input from a user specifying one or more of the hosts in the list, retrieving, from the storage array, information associated with each of the respective hosts, and making the information available to a user.

公开(公告)号：US11347397B2

公开(公告)日：2022-05-31

申请号：US16589216

申请日：2019-10-01

Applicant: EMC IP Holding Company LLC

Inventor： Owen Martin ,  Arieh Don

IPC: G06F3/06

Abstract: Embodiments of the present disclosure relate to traffic class management of NVMe (non-volatile memory express) traffic. One or more input/output (I/O) operations are received at a device interface coupled to one or more storage devices of a storage array. A service level (SL) corresponding to each of the one or more I/O operations is determined. Each of the one or more I/O operations is transmitted to the one or storage devices over a virtual channel of a set of virtual channels based on the determined SL corresponding to each of the one or more I/O operations.

公开(公告)号：US11327888B2

公开(公告)日：2022-05-10

申请号：US16597951

申请日：2019-10-10

Applicant: EMC IP Holding Company LLC

Inventor： Arieh Don ,  Adnan Sahin ,  Owen Martin ,  Peter Blok ,  Philip Derbeko

IPC: G06F12/00 ,  G06F12/06 ,  G06F12/0817 ,  G06F12/0813 ,  G06F12/084

Abstract: A host server in a server cluster has a memory allocator that creates a dedicated host application data cache in storage class memory. A background routine destages host application data from the dedicated cache in accordance with a destaging plan. For example, a newly written extent may be destaged based on aging. All extents may be flushed from the dedicated cache following host server reboot. All extents associated with a particular production volume may be flushed from the dedicated cache in response to a sync message from a storage array.

公开(公告)号：US20220113891A1

公开(公告)日：2022-04-14

申请号：US17068352

申请日：2020-10-12

Applicant: EMC IP Holding Company LLC

Inventor： Sanjib Mallick ,  Vinay G. Rao ,  Krishna Deepak Nuthakki ,  Arieh Don

IPC: G06F3/06

Abstract: An apparatus comprises at least one processing device that is configured to send write requests to a first storage system. The first storage system is configured to participate in a replication process in which data associated with the write requests is replicated from the first storage system to a second storage system that is separate from the first storage system. The at least one processing device is further configured to receive from the first storage system an indication of a write pressure condition arising in the second storage system and relating to replication of the data associated with the write requests from the first storage system to the second storage system, and to at least temporarily limit a manner in which additional write requests are sent to the first storage system responsive to the received indication of the write pressure condition arising in the second storage system.

公开(公告)号：US11301487B1

公开(公告)日：2022-04-12

申请号：US15656286

申请日：2017-07-21

Applicant: EMC IP Holding Company LLC

Inventor： Sunil Kumar ,  Vinay Rao ,  Boaz Michaely ,  Arieh Don

IPC: G06F16/27 ,  G06F9/455 ,  G06F16/22 ,  H04L67/01 ,  H04L61/5007

Abstract: In one example, a method involves performing an initial discovery process that includes querying a storage array, and identifying, based on the query, one or more hosts that are registered with the storage array. This initial discovery process is performed automatically without requiring user action to identify the one or more hosts. The method additionally includes presenting a list of discovered hosts, receiving a selection input from a user specifying one or more of the hosts in the list, retrieving, from the storage array, information associated with each of the respective hosts, and making the information available to a user.

公开(公告)号：US20220100687A1

公开(公告)日：2022-03-31

申请号：US17038188

申请日：2020-09-30

Applicant: EMC IP Holding Company LLC

Inventor： Adnan Sahin ,  Ian Wigmore ,  Arieh Don

IPC: G06F13/28

Abstract: A host system may include a computational processing unit implemented using hardware and a hardware virtualizing and remote sharing (HVRS) server that virtualizes and shares the computational processing unit with other host systems, where the host system is directly connected to an internal fabric of a storage system. A storage system interface (SSI) of the host system may be directly connected to the internal fabric of the storage system and also directly connected to a same peripheral device interconnect as the CPU, the computational processing unit and/or other hardware resources of the host system. The SSI may communicate with storage resources of the storage system using remote direct memory access (RDMA) and zero-copy technologies. Such a host system may provide the storage capacity and data protection services of a storage system at relatively fast speeds e.g., comparable to non-volatile RAM on a host system configured for use as persistent memory.

公开(公告)号：US11288196B2

公开(公告)日：2022-03-29

申请号：US16742947

申请日：2020-01-15

Applicant: EMC IP Holding Company LLC

Inventor： Gabriel Benhanokh ,  Ian Wigmore ,  Arieh Don

IPC: G06F13/16 ,  G06F12/0831 ,  G06F12/084 ,  G06F9/54

Abstract: In response to receiving a read metadata request from the host system for a data portion, the storage system may determine a status and location of the data portion, including determining whether the data portion is in a cache of the storage system. If the data portion is in the cache, the storage system may send a response that includes the data portion itself along with the status and location of the data portion. If the data portion is not in the cache, the storage system may send a response to the read metadata request that includes the status and location of the data portion, but not the data portion itself. The host system may be configured to determine whether the data portion has been returned with the metadata response, and if so, refrain from sending a separate data request, for example, to retrieve the data portion from cache.

公开(公告)号：US20220027088A1

公开(公告)日：2022-01-27

申请号：US16939157

申请日：2020-07-27

Applicant: EMC IP Holding Company LLC

Inventor： Igor Fradkin ,  Scott Rowlands ,  Ramprasad Shetty ,  David Brown ,  Arieh Don

IPC: G06F3/06

Abstract: Embodiments of the present disclosure relate to traffic class management of NVMe (non-volatile memory express) traffic. One or more virtual controllers for at least one host adapter (HA) of a storage device are generated. Each virtual controller is assigned a unique controller identifier (ID) Additionally, one or more input/output (IO) queues for each virtual controller are established. Further, IO workloads are processed via each IO queue.