VHD文件结构解析

摘要

VHD（Virtual Hard Disk）文件格式是一种重要的虚拟硬盘格式。通过对VHD文件格式的详细分析，论述了虚拟硬盘和VHD文件地址之间的映射关系，以及怎样在宿主文件系统上向不同类型的VHD文件中存储数据。并通过了解VHD的新版本VHDX，明了新版本通过在结构上的改进，提高了性能指标。最后，对VHD、VHDX文件格式在虚拟化应用的前景做出展望。%VHD (Virtual Hard Disk) file format is an important virtual hard disk format. Through detailed analysis of the VHD file format, the mapping of addresses between virtual hard disk and VHD files, and how to store data in different types of VHD files on the host file system are discussed . Also, by learning a new version of VHD-VHDX, that the new version improve the performance indicators through improvements in the structure is known. Finally, there is a prospect of application of VHD, VHDX file format in virtualization.