VERITAS File System 4.1 Administrator's Guide

Appendix C 251
C Disk Layout
Disk Layout
The disk layout is the way file system information is stored on disk. On VxFS, six different
disk layout versions were created to take advantage of evolving technological developments.
The disk layout versions used on VxFS were:
Table C-1
Version 1 The Version 1 disk layout is the original VxFS disk
layout provided with pre-2.0 versions of VxFS.
Not Supported
Version 2 The Version 2 disk layout supports features such as
filesets, dynamic inode allocation, and enhanced
security. The Version 2 layout is available with and
without quotas support.
Not Supported
Version 3 The Version 3 disk layout encompasses all file system
structural information in files, rather than at fixed
locations on disk, allowing for greater scalability.
Version 3 supports files and file systems up to one
terabyte in size.
Not Supported
Version 4 The Version 4 disk layout encompasses all file system
structural information in files, rather than at fixed
locations on disk, allowing for greater scalability.
Version 4 supports files and file systems up to two
terabytes in size.
Supported
Version 5 Version 5 enables the creation of file system sizes up to
32 terabytes. Files can be a maximum of two
terabytes. File systems larger than 2 TB must be
created on a VERITAS Volume Manager volume.
Version 5 also enables setting up to 1024 access
control list (ACL) entries.
Supported
Version 6 The Version 6 disk layout enables features such as
multi-volume support, cross-platform data sharing,
named data streams, and file change log.
Supported