MVS HFS数据集和z/OS UNIX 文件系统
Hierarchical File System (HFS)/zSeries File System (zFS) is a tree structure consisting of multiple file systems. A file system is a logical collection of directories and files. The highestlevel directory in the hierarchy is the root directory, which is often kept in a file system with only a few other directories. Each file system is made available by a process known as mounting the file system. It is mounted at a mount point that is a directory in the higher-level file system.
Hierarchical File System (HFS)/zSeries File System (zFS) is a tree structure consisting of multiple file systems. A file system is a logical collection of directories and files. The highestlevel directory in the hierarchy is the root directory, which is often kept in a file system with only a few other directories. Each file system is made available by a process known as mounting the file system. It is mounted at a mount point that is a directory in the higher-level file system. The entire file hierarchy is made up of a collection of HFS/zFS data sets. Each physical HFS/zFS data set is a mountable file system. This means it can be attached to the HFS/zFS tree at a mount point in the root directory or at a mount point further down in the hierarchy. Each HFS/zFS data set needs data set access rules defined to protect it. The following diagram illustrates the relationship between MVS HFS/zFS data sets and z/OS UNIX file systems. This is an example with four MVS data sets (SYS1.OE.ROOT, SYS3.OE.ETCFILES, DAZ0111.OE.MYHFS1, and DAZ0222.OE.MYHFS1) corresponding to four z/OS UNIX file systems (root, etc., daz0111, daz0222).