Writing data in a distributed data storage system

    公开(公告)号:US11379119B2

    公开(公告)日:2022-07-05

    申请号:US16929017

    申请日:2020-07-14

    Applicant: NetApp, Inc.

    Inventor: David D. Wright

    Abstract: Methods, systems, and apparatuses, including computer programs encoded on computer-readable media, for receiving a write request that includes data and a client address at which to store the data. The data is segmented into the one or more storage units. A storage unit identifier for each of the one or more storage units is computed that uniquely identifies content of a storage unit. A mapping between each storage unit identifier to a block server is determined. The mapping is sent to a plurality of metadata servers to provide the mapping in case of failure of the metadata server. For each of the one or more storage units, the storage unit and the corresponding storage unit identifier is sent to a block server. The block server stores the storage unit and information on where the storage unit is stored on the block server for the storage unit identifier. Multiple client addresses associated with a storage unit with the same storage unit identifier are mapped to a single storage unit.

    Rule-based performance class access management for storage cluster performance guarantees

    公开(公告)号:US10951488B2

    公开(公告)日:2021-03-16

    申请号:US16723701

    申请日:2019-12-20

    Applicant: NetApp, Inc.

    Abstract: Performance of a storage system with data distributed substantially, evenly across a cluster of storage nodes can be dynamically managed according whether quality of service (QoS) rules based on one or more performance capacities according to performance class is satisfied, wherein each QoS rule includes a boundary condition and a threshold expressing performance guarantees to a respective performance class. Determining for each QoS rule, whether a respective boundary condition satisfies a respective threshold based on measured capacity for a performance metric corresponding to the respective boundary condition; and if so, setting a first QoS parameter associated with the set of QoS rules and throttling access to the storage system by a first client associated with a first performance class based on the first QoS parameter to enforce the performance guarantees to the first performance class.

    Quality of service policy based load adaption

    公开(公告)号:US10911328B2

    公开(公告)日:2021-02-02

    申请号:US16588594

    申请日:2019-09-30

    Applicant: NetApp, Inc.

    Abstract: A storage system monitors system performance metrics and client performance metrics related to input/output (I/O) operations. The storage system, generates a performance adjustment value for each client using a proportional-integral-derivative (PID) controller to match the corresponding respective target performance value within a time period based on feedback of the respective monitored client performance metric and the system performance metric. The storage system, throttles I/O operations for each client during the time period such that the respective client performance moves toward the corresponding respective target performance value.

    Per-volume tenant encryption and external key manager

    公开(公告)号:US10460124B2

    公开(公告)日:2019-10-29

    申请号:US15186787

    申请日:2016-06-20

    Applicant: NETAPP, INC.

    Abstract: A server node with one or more processors is configured to receive a request to write data to a storage medium and compress the data to yield compressed data. The one or more processors are further configured to encrypt the compressed data according to an encryption key to yield compressed and encrypted data. The one or more processors are further configured to hash the compressed and encrypted data to yield one or more block identifiers that uniquely represent the compressed and encrypted data.

    Proportional quality of service based on client impact on an overload condition

    公开(公告)号:US11212196B2

    公开(公告)日:2021-12-28

    申请号:US17163679

    申请日:2021-02-01

    Applicant: NetApp, Inc.

    Abstract: A distributed storage system monitors one or more system performance metrics and one or more client performance metrics related usage of the distributed storage system, including a read latency metric, a write latency metric, a total input/output (I/O) operations per second (IOPS) metric, a read IOPS metric, a write IOPS metric, an I/O size metric, a total bandwidth metric, a read bandwidth metric, a write bandwidth metric, a read/write ratio metric or statistical measures thereof over a period of time. When the distributed storage system is determined to be in an overload condition (e.g., when a system load value, calculated based on the performance metrics, exceeds a threshold), the distributed storage system independently throttles access to one or more components of the distributed storage system by one or more of multiple clients performing I/O operations to the distributed storage system based on their respective contribution to the overload condition.

    WRITING DATA IN A DISTRIBUTED DATA STORAGE SYSTEM

    公开(公告)号:US20200341651A1

    公开(公告)日:2020-10-29

    申请号:US16929017

    申请日:2020-07-14

    Applicant: NetApp, Inc.

    Inventor: David D. Wright

    Abstract: Methods, systems, and apparatuses, including computer programs encoded on computer-readable media, for receiving a write request that includes data and a client address at which to store the data. The data is segmented into the one or more storage units. A storage unit identifier for each of the one or more storage units is computed that uniquely identifies content of a storage unit. A mapping between each storage unit identifier to a block server is determined. The mapping is sent to a plurality of metadata servers to provide the mapping in case of failure of the metadata server. For each of the one or more storage units, the storage unit and the corresponding storage unit identifier is sent to a block server. The block server stores the storage unit and information on where the storage unit is stored on the block server for the storage unit identifier. Multiple client addresses associated with a storage unit with the same storage unit identifier are mapped to a single storage unit.

    Writing data in a distributed data storage system

    公开(公告)号:US10712944B2

    公开(公告)日:2020-07-14

    申请号:US16021421

    申请日:2018-06-28

    Applicant: NetApp, Inc.

    Inventor: David D. Wright

    Abstract: Methods, systems, and apparatuses, including computer programs encoded on computer-readable media, for receiving a write request that includes data and a client address at which to store the data. The data is segmented into the one or more storage units. A storage unit identifier for each of the one or more storage units is computed that uniquely identifies content of a storage unit. A mapping between each storage unit identifier to a block server is determined. For each of the one or more storage units, the storage unit and the corresponding storage unit identifier is sent to a block server. The block server stores the storage unit and information on where the storage unit is stored on the block server for the storage unit identifier. Multiple client addresses associated with a storage unit with the same storage unit identifier are mapped to a single storage unit.

    QUALITY OF SERVICE POLICY BASED LOAD ADAPTION

    公开(公告)号:US20200028757A1

    公开(公告)日:2020-01-23

    申请号:US16588594

    申请日:2019-09-30

    Applicant: NetApp, Inc.

    Abstract: A storage system monitors system performance metrics and client performance metrics related to input/output (I/O) operations. The storage system, generates a performance adjustment value for each client using a proportional-integral-derivative (PID) controller to match the corresponding respective target performance value within a time period based on feedback of the respective monitored client performance metric and the system performance metric. The storage system, throttles I/O operations for each client during the time period such that the respective client performance moves toward the corresponding respective target performance value.

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