公开(公告)号：US09563511B1

公开(公告)日：2017-02-07

申请号：US14662385

申请日：2015-03-19

Applicant: EMC Corporation

Inventor： Robert Foley ,  Peter Puhov ,  Socheavy Heng

IPC: G06F11/20 ,  G06F11/10 ,  G06F3/06 ,  G06F11/14

CPC classification number: G06F11/1092 ,  G06F3/061 ,  G06F3/0655 ,  G06F3/0659 ,  G06F3/0689 ,  G06F11/1456 ,  G06F11/2058 ,  G06F11/2094

Abstract: A technique configures data storage equipment to (i) allow host I/O operations to start on storage devices while a credit tally is less than a predefined credit quota and (ii) block host I/O operations from starting on the storage devices while the tally is greater than the quota. The technique further involves, while a rebuild procedure is not being performed on the storage devices, (i) allocating host I/O credits at equal weight to the tally upon starting host I/O operations and (ii) de-allocating the credits at equal weight from the tally upon completion of the operations. The technique further involves, while the rebuild procedure is being performed on the storage devices, (i) allocating host I/O credits at greater than equal weight to the tally upon starting host I/O operations and (ii) de-allocating the credits at greater than equal weight from the tally upon completion of the operations.

Abstract translation: 一种技术配置数据存储设备以（i）允许主机I / O操作在存储设备上启动，而信用计数小于预定义的信用配额，以及（ii）阻止主机I / O操作在存储设备上启动，而 配额大于配额。 该技术还涉及在不在存储设备上执行重建过程的同时，（i）在启动主机I / O操作时，以相等的权重分配主机I / O信用，并且（ii）在 完成操作后的计数相等。 该技术进一步涉及在存储设备上执行重建过程时，（i）在启动主机I / O操作时将主机I / O信用分配给大于等于重量的计数，以及（ii）取消分配信用 在完成操作后，从计数大于等于重量。