公开(公告)号：US08825963B1

公开(公告)日：2014-09-02

申请号：US13863316

申请日：2013-04-15

Applicant: NetApp. Inc.

Inventor： John K. Edwards ,  Keith A. Smith ,  Jiri Schindler ,  Steven R. Kleiman

IPC: G06F13/00 ,  G06F17/30

CPC classification number: G06F17/30091 ,  G06F3/0611 ,  G06F3/064 ,  G06F3/067 ,  G06F11/1076

Abstract: A storage system provides highly flexible data layouts that can be tailored to various different applications and use cases. The system dynamically balances performance with block sharing, based on service level objectives (SLOs). The system defines several types of data containers, including “regions”, “logical extents” and “slabs”. Each region includes one or more logical extents. Allocated to each logical extent is at least part of one or more slabs allocated to the region that includes the extent. Each slab is a set of blocks of storage from one or more physical storage devices. The slabs can be defined from a heterogeneous pool of physical storage. The system also maintains multiple “volumes” above the region layer. Each volume includes one or more logical extents from one or more regions. Layouts of the extents within the regions are not visible to any of the volumes.

Abstract translation: 存储系统提供高度灵活的数据布局，可以针对各种不同的应用程序和用例进行定制。 系统根据服务水平目标（SLO）将性能与块共享动态平衡。 系统定义了几种类型的数据容器，包括“区域”，“逻辑盘区”和“板”。 每个区域包括一个或多个逻辑盘区。 分配到每个逻辑范围的至少一部分是分配给包含该范围的区域的一个或多个slab。 每个平板是来自一个或多个物理存储设备的一组存储块。 板可以从物理存储的异构池定义。 该系统还在区域层之上维护多个“体积”。 每个卷包括来自一个或多个区域的一个或多个逻辑盘区。 区域内的区域的布局对于任何卷都不可见。