Invention Grant
US09280300B2 Techniques for dynamically relocating virtual disk file blocks between flash storage and HDD-based storage
有权
在闪存和基于HDD的存储之间动态重定位虚拟磁盘文件块的技术
- Patent Title: Techniques for dynamically relocating virtual disk file blocks between flash storage and HDD-based storage
- Patent Title (中): 在闪存和基于HDD的存储之间动态重定位虚拟磁盘文件块的技术
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Application No.: US13931309Application Date: 2013-06-28
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Publication No.: US09280300B2Publication Date: 2016-03-08
- Inventor: Deng Liu , Wei Zhang , Xiaoyun Zhu , Mayank Rawat , Sandeep Uttamchandani , Li Zhou , Jianzhe Tai
- Applicant: VMware, Inc.
- Applicant Address: US CA Palo Alto
- Assignee: VMware, Inc.
- Current Assignee: VMware, Inc.
- Current Assignee Address: US CA Palo Alto
- Main IPC: G06F3/00
- IPC: G06F3/00 ; G06F3/06

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.
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