Veritas File System 5.0 AdministratorÆs Guide, HP-UX 11i v3, First Edition, May 2008

VxFS Version 7 disk layout
VxFS disk layout Version 7 is similar to Version 6, except that Version 7 enables
support for variable and large size history log records, more than 2048 volumes,
large directory hash, and Dynamic Storage Tiering. The Version 7 disk layout can
theoretically support files and file systems up to 8 exabytes (2
63
). For a file system
to take advantage of VxFS 8-exabyte support, it must be created on a Veritas
Volume Manager volume. For 64-bit kernels, the maximum size of the file system
you can create depends on the block size:
Currently-Supported Maximum File System SizeBlock Size
68,719,472,624 sectors (≈32 TB)1024 bytes
137,438,945,248 sectors (≈64 TB)2048 bytes
274,877,890,496 sectors (≈128 TB)4096 bytes
549,755,780,992 sectors (≈256 TB)8192 bytes
Note: Sector size in bytes specified by the DEV_BSIZE system parameter.
If you specify the file system size when creating a file system, the block size
defaults to the appropriate value as shown above.
See the mkfs(1M) manual page.
See “About quota files on Veritas File System” on page 102.
265Disk layout
VxFS Version 7 disk layout