公开(公告)号：US09329956B2

公开(公告)日：2016-05-03

申请号：US14323883

申请日：2014-07-03

Applicant: NetApp, Inc.

Inventor： Doug Coatney ,  Hung Lu

IPC: G06F11/20 ,  H04L29/08 ,  G06F11/07

CPC classification number: G06F11/2094 ,  G06F11/0727 ,  G06F11/0766 ,  H04L67/1097

Abstract: A method and system for reading exception data by a storage server from a storage controller. An exception event is detected at the storage server. The storage server registers with the controller, such that only one storage server can read the exception data at a time. If the storage server is registered with the controller, the storage server reads the exception data. If the storage server does not successfully register with the controller, the controller keeps track of which storage servers have not read the exception data, to ensure that all storage servers can read the data.

Abstract translation: 一种用于从存储控制器读取存储服务器的异常数据的方法和系统。 在存储服务器上检测到异常事件。 存储服务器向控制器注册，使得只有一个存储服务器可以一次读取异常数据。 如果存储服务器向控制器注册，则存储服务器读取异常数据。 如果存储服务器未成功向控制器注册，则控制器会跟踪哪些存储服务器未读取异常数据，以确保所有存储服务器都可以读取数据。

公开(公告)号：US09720601B2

公开(公告)日：2017-08-01

申请号：US14619934

申请日：2015-02-11

Applicant: NetApp, Inc.

Inventor： Anish Gupta ,  Samiullah Mohammed ,  Jamie Nguyen ,  Hung Lu

IPC: G06F3/06

CPC classification number: G06F3/0611 ,  G06F3/0635 ,  G06F3/0653 ,  G06F3/0659 ,  G06F3/067 ,  G06F3/0688

Abstract: A technique for load balancing uses heuristic-based algorithms with respect to input/output (I/O) latency of workloads destined to storage devices, e.g., solid state drives (SSDs), of a storage array attached to a storage system. Illustratively, “front-end” requests received from a host result in a back-end workload as those requests are processed by a storage I/O stack of the storage system and stored on the storage array. Accordingly, the technique maintains a consistent latency for the host requests (front-end) to control latency for the back-end workload. The load balancing technique illustratively load balances fixed (back-end) workloads having similar I/O sizes and I/O patterns. Illustratively, the technique balances the workloads across a plurality of storage ports over one or more I/O paths to the SSDs. Access to the SSDs may then be distributed among the storage ports.

公开(公告)号：US20160231948A1

公开(公告)日：2016-08-11

申请号：US14619934

申请日：2015-02-11

Applicant: NetApp, Inc.

Inventor： Anish Gupta ,  Samiullah Mohammed ,  Jamie Nguyen ,  Hung Lu

IPC: G06F3/06

CPC classification number: G06F3/0611 ,  G06F3/0635 ,  G06F3/0653 ,  G06F3/0659 ,  G06F3/067 ,  G06F3/0688

Abstract: A technique for load balancing uses heuristic-based algorithms with respect to input/output (I/O) latency of workloads destined to storage devices, e.g., solid state drives (SSDs), of a storage array attached to a storage system. Illustratively, “front-end” requests received from a host result in a back-end workload as those requests are processed by a storage I/O stack of the storage system and stored on the storage array. Accordingly, the technique maintains a consistent latency for the host requests (front-end) to control latency for the back-end workload. The load balancing technique illustratively load balances fixed (back-end) workloads having similar I/O sizes and I/O patterns. Illustratively, the technique balances the workloads across a plurality of storage ports over one or more I/O paths to the SSDs. Access to the SSDs may then be distributed among the storage ports.

Abstract translation: 一种用于负载均衡的技术使用基于启发式的算法，其关于发往存储系统的存储阵列的存储设备（例如，固态驱动器（SSD））的工作负载的输入/输出（I / O）延迟。 说明性地，从主机接收到的“前端”请求导致后端工作负载，因为这些请求由存储系统的存储I / O堆栈处理并存储在存储阵列上。 因此，该技术为主机请求（前端）保持一致的延迟，以控制后端工作负载的延迟。 负载平衡技术说明性地负载平衡具有类似I / O大小和I / O模式的固定（后端）工作负载。 说明性地，该技术通过跨越SSD的一个或多个I / O路径平衡跨多个存储端口的工作负载。 然后可以在存储端口之间分配对SSD的访问。

公开(公告)号：US20150161018A1

公开(公告)日：2015-06-11

申请号：US14323883

申请日：2014-07-03

Applicant: NetApp, Inc.

Inventor： Doug Coatney ,  Hung Lu

IPC: G06F11/20 ,  H04L29/08

CPC classification number: G06F11/2094 ,  G06F11/0727 ,  G06F11/0766 ,  H04L67/1097

Abstract: A method and system for reading exception data by a storage server from a storage controller. An exception event is detected at the storage server. The storage server registers with the controller, such that only one storage server can read the exception data at a time. If the storage server is registered with the controller, the storage server reads the exception data. If the storage server does not successfully register with the controller, the controller keeps track of which storage servers have not read the exception data, to ensure that all storage servers can read the data.