公开(公告)号：US20190205055A1

公开(公告)日：2019-07-04

申请号：US15861862

申请日：2018-01-04

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Krishnasuri NARAYANAM ,  Sarvesh PATEL ,  Sachin C. PUNADIKAR ,  Subhojit ROY

IPC: G06F3/06

Abstract: Embodiments for optimizing sequential write operations in a data deduplication environment by one or more processors. Similar data deduplication signatures for stored data at all storage devices in one or more storage systems may be maintained. A deduplication signature associated with a write operation at a storage device may be compared to the similar data deduplication signatures. Results of the comparison with each of the other storage devices may be shared prior to performing the write operation.

公开(公告)号：US20150154411A1

公开(公告)日：2015-06-04

申请号：US14617105

申请日：2015-02-09

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Rahul M. FISKE ,  Carl E. JONES ,  Subhojit ROY

IPC: G06F21/60 ,  G06F17/30

CPC classification number: G06F21/604 ,  G06F3/0608 ,  G06F3/0623 ,  G06F3/0641 ,  G06F3/067 ,  G06F17/30156 ,  G06F21/602

Abstract: A system and non-transitory computer program product for preserving data redundancy in a data deduplication system in a computing environment is provided. A selected data segment, to be written through the data deduplication system, is encrypted such that the selected data segment is not subject to a deduplication operation. Copies of the data segment that are to be precluded from data deduplication are determined and identified. A unique encryption key is used to encrypt the selected data segment to be written through the data deduplication system such that the selected data segment is not subject to a deduplication operation. The data deduplication system is tricked to recognize the encrypted, selected data segment as new, undeduplicated data by the encrypting thereby skipping steps of the deduplication operation that includes fingerprint generation and matching. The encrypted, selected data segment is directly written to a new physical storage location.

Abstract translation: 提供了一种用于在计算环境中保留数据重复数据删除系统中的数据冗余的系统和非暂时计算机程序产品。 要通过重复数据删除系统写入的选定数据段被加密，使得所选择的数据段不受重复数据删除操作的影响。 确定并确定要排除重复数据删除的数据段的副本。 使用唯一的加密密钥来加密要通过重复数据删除系统写入的所选择的数据段，使得所选择的数据段不受重复数据删除操作的影响。 重复数据删除系统被欺骗以通过加密将加密的所选数据段识别为新的未经复制的数据，从而跳过包括指纹生成和匹配的重复数据删除操作的步骤。 加密的选定数据段直接写入新的物理存储位置。

公开(公告)号：US20240319877A1

公开(公告)日：2024-09-26

申请号：US18188840

申请日：2023-03-23

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Abhishek JAISWAL ,  Subhojit ROY ,  Bharti SONI ,  Komal Shailendra SHAH ,  Shrirang Shrikant BHAGWAT

IPC: G06F3/06

CPC classification number: G06F3/061 ,  G06F3/0655 ,  G06F3/0679

Abstract: A first volume is maintained at a primary site and a second volume is maintained at a secondary site, where operations to mirror the first volume at the primary site to the second volume at the secondary site are performed while other volumes of the primary site and the secondary site are maintained in a remote copy relationship. Input/Output (I/O) operations comprising writing a metadata on the first volume at the primary site are performed and corresponding read I/O operations are performed on the second volume at the secondary site. In response to determining that the metadata read in two consecutive read I/O operations on the second volume at the secondary site does not reflect updates as requested to be made to the first volume at the primary site, determining that the primary site has failed.

公开(公告)号：US20150154410A1

公开(公告)日：2015-06-04

申请号：US14617091

申请日：2015-02-09

Applicant: International Business Machines Corporation

Inventor： Rahul M. FISKE ,  Carl E. JONES ,  Subhojit ROY

IPC: G06F21/60 ,  G06F17/30

CPC classification number: G06F21/604 ,  G06F3/0608 ,  G06F3/0623 ,  G06F3/0641 ,  G06F3/067 ,  G06F17/30156 ,  G06F21/602

Abstract: A method for preserving data redundancy in a data deduplication system in a computing environment is provided. A selected data segment, to be written through the data deduplication system, is encrypted such that the selected data segment is not subject to a deduplication operation. The method determines and identifies copies of the data segment that are to be precluded from data deduplication. A unique encryption key is used to encrypt the selected data segment to be written through the data deduplication system such that the selected data segment is not subject to a deduplication operation. The data deduplication system is tricked to recognize the encrypted, selected data segment as new, undeduplicated data by the encrypting thereby skipping steps of the deduplication operation that includes fingerprint generation and matching. The encrypted, selected data segment is directly written to a new physical storage location.

Abstract translation: 提供了一种用于在计算环境中保留重复数据删除系统中的数据冗余的方法。 要通过重复数据删除系统写入的选定数据段被加密，使得所选择的数据段不受重复数据删除操作的影响。 该方法确定并识别要从数据重复数据删除中排除的数据段的副本。 使用唯一的加密密钥来加密要通过重复数据删除系统写入的所选择的数据段，使得所选择的数据段不受重复数据删除操作的影响。 重复数据删除系统被欺骗以通过加密将加密的所选数据段识别为新的未经复制的数据，从而跳过包括指纹生成和匹配的重复数据删除操作的步骤。 加密的选定数据段直接写入新的物理存储位置。

公开(公告)号：US20130325801A1

公开(公告)日：2013-12-05

申请号：US13801739

申请日：2013-03-13

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Pankaj S. BAVISHI ,  Gaurav CHHAUNKER ,  Carl E. JONES ,  Pankaj O. KHANDELWAL ,  Subhojit ROY

IPC: G06F17/30

Abstract: An application programming interface (API) is used to migrate, from a specified source LUN to a specified target LUN, at least one specified sub-LUN data chunk, the API functioning as an interface between a storage controller and an owning application.

Abstract translation: 应用程序编程接口（API）用于从指定的源LUN到指定的目标LUN迁移至少一个指定的子LUN数据块，该API用作存储控制器和所有者应用程序之间的接口。

公开(公告)号：US20130283062A1

公开(公告)日：2013-10-24

申请号：US13801502

申请日：2013-03-13

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Rahul M. FISKE ,  Carl E. JONES ,  Subhojit ROY

IPC: G06F21/60

CPC classification number: G06F21/604 ,  G06F3/0608 ,  G06F3/0623 ,  G06F3/0641 ,  G06F3/067 ,  G06F17/30156 ,  G06F21/602

Abstract: Various embodiments for preserving data redundancy in a data deduplication system in a computing environment are provided. In one embodiment, a method for such preservation is disclosed. A selected data segment, to be written through the data deduplication system, is encrypted such that the selected data segment is not subject to a deduplication operation.

Abstract translation: 提供了用于在计算环境中保留数据重复数据删除系统中的数据冗余的各种实施例。 在一个实施例中，公开了这种保存的方法。 要通过重复数据删除系统写入的选定数据段被加密，使得所选择的数据段不受重复数据删除操作的影响。

公开(公告)号：US20180018379A1

公开(公告)日：2018-01-18

申请号：US15208930

申请日：2016-07-13

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Sasikanth EDA ,  Akshat MITHAL ,  Sandeep R. PATIL ,  Subhojit ROY

IPC: G06F17/30 ,  G06N7/00

CPC classification number: G06F16/185

Abstract: Various embodiments for managing data stored in a tiered data storage environment, by a processor device, are provided. A data file is proactively migrated from a lower tier to a higher tier of the tiered data storage environment by using a multidimensional algorithm adopting an actual frequency of access of the data file to gauge a slope of a predicted frequency of access of the data file. The data file is migrated from the lower tier to the higher tier only if each of a plurality of criteria of the multidimensional algorithm is satisfied.

公开(公告)号：US20170329815A1

公开(公告)日：2017-11-16

申请号：US15667247

申请日：2017-08-02

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Rahul M. FISKE ,  Carl E. JONES ,  Subhojit ROY

IPC: G06F17/30

CPC classification number: G06F16/2365 ,  G06F3/0608 ,  G06F3/0619 ,  G06F3/0641 ,  G06F3/0659 ,  G06F3/0689 ,  G06F16/1748 ,  G06F16/2282 ,  G06F16/2379

Abstract: Various embodiments for preserving data redundancy in a data deduplication system in a computing environment are provided. A write command is received for writing a selected data segment to a physical storage location. A determination is made as to whether the write command includes an indicator including at least one of a bit and a flag, the indicator designating that the selected data segment must not be subject to a deduplication operation. An indicator is configured by providing a system call with an extended attribute indicating that the selected data segment must be written to physical memory notwithstanding the selected data segment matching data written to the physical memory earlier in time.

公开(公告)号：US20160124985A1

公开(公告)日：2016-05-05

申请号：US14993298

申请日：2016-01-12

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Rahul M. FISKE ,  Carl E. JONES ,  Subhojit ROY

IPC: G06F17/30

CPC classification number: G06F17/30156 ,  G06F3/061 ,  G06F3/0641 ,  G06F17/30233 ,  G06F17/30371

Abstract: Various embodiments for preserving data redundancy of identical data in a data deduplication system in a computing environment are provided. In one embodiment, a method for such preservation is disclosed. A selected range of virtual addresses of a virtual storage device in the computing environment is designated as not subject to a deduplication operation. Other system and computer program product embodiments are disclosed and provide related advantages.

公开(公告)号：US20130326183A1

公开(公告)日：2013-12-05

申请号：US13801732

申请日：2013-03-13

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Pankaj S. BAVISHI ,  Gaurav CHHAUNKER ,  Carl E. JONES ,  Pankaj O. KHANDELWAL ,  Subhojit ROY

IPC: G06F3/06

Abstract: A source code-based specification is implemented for use as an interface between a storage controller and an owning application to migrate a specified size of data from physical storage behind the LUN to a new physical location.