公开(公告)号：US20150006787A1

公开(公告)日：2015-01-01

申请号：US13931309

申请日：2013-06-28

Applicant: VMware, Inc.

Inventor： Deng Liu ,  Wei Zhang ,  Xiaoyun Zhu ,  Mayank Rawat ,  Sandeep Uttamchandani ,  Li Zhou ,  Jianzhe Tai

IPC: G06F3/06

CPC classification number: G06F3/0685 ,  G06F3/0604 ,  G06F3/061 ,  G06F3/0649

Abstract: Techniques for dynamically managing the placement of blocks of a logical file between a flash storage tier and an HDD storage tier are provided. In one embodiment, a computer system can collect I/O statistics pertaining to the logical file, where a first subset of blocks of the logical file are stored on the flash storage tier and where a second subset of blocks of the logical file are stored on the HDD storage tier. The computer system can further generate a heat map for the logical file based on the I/O statistics, where the heat map indicates, for each block of the logical file, the number of times the block has been accessed. The computer system can then identify, using the heat map, one or more blocks of the logical file as being performance-critical blocks, and can move data between the flash and HDD storage tiers such that the performance-critical blocks are placed on the flash storage tier.

Abstract translation: 提供了用于在闪存存储层和HDD存储层之间动态管理逻辑文件块的位置的技术。 在一个实施例中，计算机系统可以收集与逻辑文件相关的I / O统计信息，其中逻辑文件的块的第一子集存储在闪存存储层上，并且逻辑文件的块的第二子集存储在 HDD存储层。 计算机系统可以基于I / O统计信息进一步生成用于逻辑文件的热图，其中热图针对逻辑文件的每个块指示块已经被访问的次数。 计算机系统然后可以使用热图将逻辑文件的一个或多个块识别为性能关键块，并且可以在闪存和HDD存储层之间移动数据，使得性能关键块被放置在闪存上 存储层。

公开(公告)号：US09280300B2

公开(公告)日：2016-03-08

申请号：US13931309

申请日：2013-06-28

Applicant: VMware, Inc.

Inventor： Deng Liu ,  Wei Zhang ,  Xiaoyun Zhu ,  Mayank Rawat ,  Sandeep Uttamchandani ,  Li Zhou ,  Jianzhe Tai

IPC: G06F3/00 ,  G06F3/06

CPC classification number: G06F3/0685 ,  G06F3/0604 ,  G06F3/061 ,  G06F3/0649

Abstract: Techniques for dynamically managing the placement of blocks of a logical file between a flash storage tier and an HDD storage tier are provided. In one embodiment, a computer system can collect I/O statistics pertaining to the logical file, where a first subset of blocks of the logical file are stored on the flash storage tier and where a second subset of blocks of the logical file are stored on the HDD storage tier. The computer system can further generate a heat map for the logical file based on the I/O statistics, where the heat map indicates, for each block of the logical file, the number of times the block has been accessed. The computer system can then identify, using the heat map, one or more blocks of the logical file as being performance-critical blocks, and can move data between the flash and HDD storage tiers such that the performance-critical blocks are placed on the flash storage tier.

Abstract translation: 提供了用于在闪存存储层和HDD存储层之间动态管理逻辑文件块的位置的技术。 在一个实施例中，计算机系统可以收集与逻辑文件相关的I / O统计信息，其中逻辑文件的块的第一子集存储在闪存存储层上，并且逻辑文件的块的第二子集存储在 HDD存储层。 计算机系统可以基于I / O统计信息进一步生成用于逻辑文件的热图，其中热图针对逻辑文件的每个块指示块被访问的次数。 计算机系统然后可以使用热图将逻辑文件的一个或多个块识别为性能关键块，并且可以在闪存和HDD存储层之间移动数据，使得性能关键块被放置在闪存上 存储层。