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公开(公告)号：US20220035715A1
公开(公告)日：2022-02-03
申请号：US16983988
申请日：2020-08-03
Applicant: EMC IP Holding Company LLC
Inventor： Boris Shpilyuck , Jehuda Shemer , Tomer Kushnir
Abstract: Embodiments for providing automated selection of optimal disk types for virtualized storage by defining a minimum number of backup samples, selecting, if the minimum number of backup samples is not met for a backup operation, a solid state drive (SSD) for a virtual machine (VM) storage for a disaster recovery operation, otherwise selecting a hard disk drive (HDD) for the VM storage. The method further defines a cold HDD threshold (CHT) value and a minimal percentage of backups (PPT) value, and obtains a cold backup count based on the CHT value. It compares a ratio of the cold backup count to an amount of backups (AB) for the disaster recovery operation to the defined PPT value, and if the ratio is greater than the PPT value, it selects the SSD rather than HDD for the VM storage.
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公开(公告)号：US20210406133A1
公开(公告)日：2021-12-30
申请号：US16910393
申请日：2020-06-24
Applicant: EMC IP Holding Company LLC
Inventor： Jehuda Shemer , Kfir Wolfson , Tomer Kushnir , Jawad Said
Abstract: On-the-fly point-in-time recovery operations are disclosed. During a recovery operation, the PiT being restored can be changed on-the-fly or during the existing recovery operation without restarting the recovery process from the beginning. In one example, this improves recovery time operation (RTO) and prevents aspects of the recovery operation to be avoided when changing to a different PiT.
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123.发明申请公开(公告)号：US20210365336A1
公开(公告)日：2021-11-25
申请号：US16878297
申请日：2020-05-19
Applicant: EMC IP Holding Company LLC
Inventor： Bing Liu , Jehuda Shemer , Kfir Wolfson , Jawad Said
Abstract: Data protection operations including replication operations are disclosed. Virtual machines, applications, and/or application data are replicated according to at least one strategy. The replication strategy can improve performance of the recovery operation.
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公开(公告)号：US20210349776A1
公开(公告)日：2021-11-11
申请号：US17382065
申请日：2021-07-21
Applicant: EMC IP Holding Company LLC
Inventor： Kfir Wolfson , Jehuda Shemer , Assaf Natanzon
Abstract: One example method includes performing a machine learning process that involves performing an assessment of a state of a computing system, and the assessment includes analyzing information generated by an IoT edge sensor in response to a sensed physical condition in the computing system, and identifying an entity in the computing system potentially impacted by an event associated with the physical condition. The example method further includes identifying a preemptive recovery action and associating the preemptive recovery action with an entity, and the preemptive recovery action, when performed, reduces or eliminates an impact of the event on the entity, determining a cost associated with implementation of the preemptive recovery action, evaluating the cost associated with the preemptive recovery actions and identifying the preemptive recovery action with the lowest associated cost, implementing the preemptive recovery action with the lowest associated cost, and repeating part of the machine learning process.
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公开(公告)号：US20210271503A1
公开(公告)日：2021-09-02
申请号：US16803626
申请日：2020-02-27
Applicant: EMC IP Holding Company LLC
Inventor： Kfir Wolfson , ltay Azaria , Jehuda Shemer , Saar Cohen
Abstract: One example method includes intercepting an IO issued by an application of a VM, the IO including IO data and IO metadata, storing the IO data in an IO buffer, writing the IO metadata and a pointer, but not the IO data, to a splitter journal in memory, wherein the pointer points to the IO data in the IO buffer, forwarding the IO to storage, and asynchronous with operations occurring along an IO path between the application and storage, evacuating the splitter journal by sending the IO data and the IO metadata from the splitter journal to a replication site.
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Patent Agency Ranking
公开(公告)号：US20210271390A1
公开(公告)日：2021-09-02
申请号：US16802854
申请日：2020-02-27
Applicant: EMC IP Holding Company LLC
Inventor： Jehuda Shemer , Valerie Lotosh , Saar Cohen , Erez Sharvit
Abstract: Generating any point in time backups from secondary storage without native snapshot generation and providing failover capabilities from a primary storage. Data or IOs from a source are distributed to both the primary storage and the secondary storage. When a disaster occurs with one of these storages, recovery of one of the storages can be achieved using a delta marker and data from the other of the storages.
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公开(公告)号：US20210248046A1
公开(公告)日：2021-08-12
申请号：US16784074
申请日：2020-02-06
Applicant: EMC IP Holding Company LLC
Inventor： Jehuda Shemer , Nadav Azaria , Saar Cohen
Abstract: One example method includes capturing IOs, adding the IOs to a journal, adding undo data to the journal for one or more locations, and using the IOs and the undo data to determine when, during a timespan defined by the journal, a backup could have been taken. This determination may involve the use of undo data which indicates what the content of a particular location was prior to the first IO directed to that location during the timespan defined by the journal.
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128.发明申请公开(公告)号：US20210232595A1
公开(公告)日：2021-07-29
申请号：US16803918
申请日：2020-02-27
Applicant: EMC IP Holding Company LLC
Inventor： Alex Solan , Jehuda Shemer
Abstract: Embodiments extend using sparse Merkle trees for smart synchronization of S3 buckets by overcoming fixed size limitations through creating another Merkle tree when the fixed size limit of the first tree is exceeded, and creating yet another tree when the second tree is filled up, and so on as needed. The method maintains a super Merkle tree of trees, in which each tree can be synchronized separately by keeping a strict division to trees according to generation number. The generation is passed from a source site to a target site during replication operations. Syncing between two data sites is efficient as the super Merkle tree of the source is synced with the super Merkle tree of the target using the hashes on the nodes, as in normal Merkle tree sync operations.
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129.发明申请公开(公告)号：US20210232594A1
公开(公告)日：2021-07-29
申请号：US16803902
申请日：2020-02-27
Applicant: EMC IP Holding Company LLC
Inventor： Alex Solan , Jehuda Shemer
Abstract: Embodiments extend using sparse Merkle trees for smart synchronization of S3 buckets by overcoming fixed size limitations through creating another Merkle tree when the fixed size limit of the first tree is exceeded, and creating yet another tree when the second tree is filled up, and so on as needed. The method maintains a list of trees, in which each tree can be synchronized separately by keeping a strict division to trees according to generation number. The generation is passed from a source site to a target site during replication operations. The tagging of the generation number also makes it easy and efficient to remove an older version of an element or deal with deleted elements. This allows efficient syncing between two data object buckets without a size limitation on number of elements in a bucket.
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公开(公告)号：US20210064576A1
公开(公告)日：2021-03-04
申请号：US16557791
申请日：2019-08-30
Applicant: EMC IP Holding Company LLC
Inventor： Jehuda Shemer , Alex Solan
IPC: G06F16/178 , G06F9/455 , G06F11/14 , G06F16/174
Abstract: A method, apparatus, and system for transmitting file system metadata from an indexing splitter running in a VM to a source side RPA is disclosed. The operations comprise: capturing one or more file system events in a production virtual machine (VM) at an indexing splitter; transmitting file system metadata representing the captured file system events from the indexing splitter to a data splitter, the data splitter being an agent running on a host system hosting the VM; transmitting the file system metadata inside one or more special input/output (I/O) commands associated with a predetermined tag from the data splitter to a source side replication protection appliance (RPA) alongside regular storage system I/O command data; identifying the special I/O commands at the source side RPA based on the predetermined tag; and recovering the file system metadata from the special I/O commands at the source side RPA.
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