公开(公告)号：US20180373604A1

公开(公告)日：2018-12-27

申请号：US15634796

申请日：2017-06-27

Applicant: salesforce.com, inc.

Inventor： Jameison Bear Martin ,  Nathaniel Wyatt ,  Patrick James Helland ,  Thomas Fanghaenel ,  Terry Chong ,  Subho Sanjay Chatterjee

IPC: G06F11/14

CPC classification number: G06F11/1469 ,  G06F11/1451 ,  G06F11/1471 ,  G06F11/1474 ,  G06F16/219 ,  G06F2201/80 ,  G06F2201/805 ,  G06F2201/82 ,  G06F2201/84

Abstract: Systems and methods are provided for performing a point-in-time restore of data of a first tenant of a multitenanted database system. Metadata can be located to identify an archival version of first data of the first tenant stored in immutable storage of the database system. The archival version includes a most recently committed version of each datum prior to a first point in time. By using the metadata, a restore reference set is mapped into a target database instance of the database system. The mapping can be performed when all existing data for a tenant is to be the archival version, and where versions of data and records committed after the point in time are not available to the target database instance.

公开(公告)号：US20180365117A1

公开(公告)日：2018-12-20

申请号：US15889300

申请日：2018-02-06

Applicant: International Business Machines Corporation

Inventor： Robert B. Basham ,  John Lewars ,  Christopher J. Tan ,  Oleksandr Safonov

IPC: G06F11/20

CPC classification number: G06F11/2094 ,  G06F2201/805 ,  G06F2201/82

Abstract: Software and resources, pre-deployed in accordance with a disaster recovery policy, are placed in a standby state to provide rapid disaster recovery in a cloud storage environment. When a disaster recovery situation is detected, (for example a loss of access to primary data), the pre-deployed resources are immediately activated according to the disaster recovery policy to provision and re-configure adequate resources and rapidly restore access to the data (such as restoring data from cloud backup storage). A disaster recovery situation may involve, for example, loss of hardware availability, network bandwidth interruption, or a sudden and large unforeseen jump in storage retrieval request volume (for example a recall storm).

公开(公告)号：US20180349374A1

公开(公告)日：2018-12-06

申请号：US15908727

申请日：2018-02-28

Applicant: SAP SE

Inventor： Aditya Gurajada ,  Zhan-feng Ma ,  Zhi-ping Xiong

IPC: G06F17/30 ,  G06F3/06

CPC classification number: G06F17/30377 ,  G06F3/061 ,  G06F3/065 ,  G06F3/0673 ,  G06F11/1471 ,  G06F17/30336 ,  G06F17/30339 ,  G06F17/30575 ,  G06F2201/80 ,  G06F2201/82

Abstract: A system for an in-memory row storage architecture can be provided. In some implementations, the system performs operations comprising adding a data row to an in-memory row store at a row location based on a database operation, indexing the row location in an index table comprising a plurality of nodes for a plurality of rows in the in-memory row store, the plurality of nodes organized across a plurality of buckets, and accessing the data row at the row location in the in-memory row store based on the index table to perform another database operation on the data row Related systems, methods, and articles of manufacture are also described.

公开(公告)号：US20180341565A1

公开(公告)日：2018-11-29

申请号：US15604717

申请日：2017-05-25

Applicant: Western Digital Technologies, Inc.

Inventor： Ajay S. Nair

IPC: G06F11/20 ,  G11B5/596

CPC classification number: G11B5/59627 ,  G06F11/1402 ,  G06F2201/82 ,  G11B19/047 ,  G11B20/18

Abstract: A data storage device is disclosed wherein a first host block is written to a first data sector, and when writing a second host block to a second data sector the first host block is read from the first data sector. When the read of the first host block fails, a partial map is generated identifying a location of the second host block in the second data sector, the partial map is stored in a non-volatile memory, and the second host block is written to the second data sector. When a power failure occurs after writing the second host block to the second data sector, an exception entry is updated using the partial map, wherein the exception entry is associated with the first and second host blocks.

公开(公告)号：US20180341549A1

公开(公告)日：2018-11-29

申请号：US15936327

申请日：2018-03-26

Applicant: Western Digital Technologies, Inc.

Inventor： Vladislav Bolkhovitin ,  Brian W. O'Krafka ,  Sanjay Subbarao

IPC: G06F11/10 ,  G06F11/20 ,  G11C29/52 ,  H04L29/08

CPC classification number: G06F11/1068 ,  G06F11/1092 ,  G06F11/2094 ,  G06F2201/82 ,  G11C29/52 ,  H04L67/104

Abstract: A system and method improve the performance of non-volatile memory storage by rebuilding, on the fly, “lost data” in response to a read request, which identifies data to be read or recovered, by identifying a parity data storage device in a set of data storage devices that contains parity corresponding to the identified data; sending a reconstruction request to a respective data storage device, which may be the parity data storage device or other data storage device in the system, to reconstruct the identified data, and receiving the identified data from the respective data storage device. The reconstruction request commands the respective data storage device to retrieve, via peer-to-peer read requests, from other data storage devices, data from one or more data blocks, and to reconstruct the identified data based on the retrieved data and parity data locally stored at the parity data storage device.

公开(公告)号：US20180336106A1

公开(公告)日：2018-11-22

申请号：US15597920

申请日：2017-05-17

Applicant: LEI CAO

Inventor： LEI CAO

IPC: G06F11/14 ,  G06F3/06 ,  G06F9/455

CPC classification number: G06F11/1471 ,  G06F3/0604 ,  G06F3/0631 ,  G06F3/0683 ,  G06F9/45558 ,  G06F2009/45583 ,  G06F2201/805 ,  G06F2201/815 ,  G06F2201/82

Abstract: A HA computer system is configured to support the operation of an active and a standby virtual machine, and the active virtual machine supports one or more first computer processes and the standby virtual machines supports duplicates of the one or more first computer processes. Each active virtual machine monitors and stores a state of the first computer processes and periodically pauses to only synchronize some of the state of the first computer processes running on the active VM with state associated with the duplicate processes running on the standby VM stored in a first region of virtual memory.

公开(公告)号：US20180300205A1

公开(公告)日：2018-10-18

申请号：US15490236

申请日：2017-04-18

Applicant: NETPP, INC.

Inventor： Priya Sehgal ,  Atish Kathpal

IPC: G06F11/14 ,  G06F17/30

CPC classification number: G06F11/1469 ,  G06F11/1448 ,  G06F11/1451 ,  G06F11/1453 ,  G06F11/1466 ,  G06F16/128 ,  G06F16/166 ,  G06F2201/80 ,  G06F2201/82 ,  G06F2201/84

Abstract: Methods and systems for generating a cluster consistent backup of a distributed, master-less database cluster is provided. One method includes a first phase of a backup operation where a crash consistent backup of the various LUNs used by the cluster nodes is taken. The crash consistent backup is then transformed into a cluster consistent backup during a second phase of the backup operation.

公开(公告)号：US20180285211A1

公开(公告)日：2018-10-04

申请号：US15479075

申请日：2017-04-04

Applicant: International Business Machines Corporation

Inventor： Ralf Eberhard ,  Manfred Haubrich ,  Simon Lorenz ,  Frank B. Schmuck

IPC: G06F11/14

CPC classification number: G06F11/1451 ,  G06F11/142 ,  G06F11/1469 ,  G06F11/1658 ,  G06F11/202 ,  G06F11/2094 ,  G06F2201/82

Abstract: A computer-implemented method according to one embodiment includes identifying one or more accessible server nodes within a plurality of nodes of a failed clustered system, retrieving a plurality of fragments of configuration data from the one or more accessible server nodes, and constructing a backup state for the failed clustered system, utilizing the plurality of fragments of the configuration data.

公开(公告)号：US10083100B1

公开(公告)日：2018-09-25

申请号：US15910063

申请日：2018-03-02

Applicant: Hitachi, Ltd.

Inventor： Masakuni Agetsuma ,  Yuko Matsui ,  Shintaro Ito ,  Hideo Saito

IPC: G06F11/00 ,  G06F11/20 ,  G06F8/65

CPC classification number: G06F11/2094 ,  G06F8/60 ,  G06F8/65 ,  G06F11/3006 ,  G06F11/302 ,  G06F11/3034 ,  G06F11/3051 ,  G06F11/3055 ,  G06F2201/805 ,  G06F2201/82 ,  G06F2201/865

Abstract: A storage system includes a plurality of storage nodes. The storage node includes: one or more storage devices which respectively provide a storage area; and one or more control software which read/write requested data from/into the corresponding storage device according to a request from a higher-level device, wherein each of the control software retains predetermined configuration information required for reading/writing requested data from/into the corresponding storage device according to a request from the higher-level device, wherein a plurality of the control software are managed as a redundancy group, and the configuration information retained in each of the control software belonging to the same redundancy group is synchronously updated, and wherein the plurality of control software configuring the redundancy group are each deployed in respectively different storage nodes so as to distribute a load of each of the storage nodes.

公开(公告)号：US10078657B2

公开(公告)日：2018-09-18

申请号：US14867533

申请日：2015-09-28

Applicant: International Business Machines Corporation

Inventor： Hai Ji ,  Yuan Yuan Li ,  Xiao Yang Yang ,  Chun Guang Zheng

IPC: G06F17/30 ,  G06F11/20

CPC classification number: G06F16/2365 ,  G06F11/2094 ,  G06F2201/82

Abstract: A method, system, and computer program product for detecting consistency between first and second data replicas is provided. Detecting consistency between data replicas includes acquiring first characteristic information of a first data replica and second characteristic information of a second data replica, the first and second characteristic information being associated with keys of the respective first and second data replicas. Detecting consistency between data replicas further include determining, based on a predetermined threshold value of a number of determination times, whether the first characteristic information is identical to the second characteristic information of the second data replica. In response to the determining that the first characteristic information and the second characteristic information are identical, whether the first data replica is consistent with the second data replica may then be confirmed.