Veritas File System 5.1 SP1 Administrator"s Guide (5900-1499, April 2011)

Maximum File System SizeBlock Size
8,589,934,078 sectors (≈8 TB)2048 bytes
17,179,868,156 sectors (≈16 TB)4096 bytes
34,359,736,312 sectors (≈32 TB)8192 bytes
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 78.
The Version 5 disk layout also supports up to 1024 access control list entries.
VxFS Version 6 disk layout
VxFS disk layout Version 6 is similar to Version 5, except that Version 6 enables
features such as multi-volume support, cross-platform data sharing, named data
streams, and File Change Log. Structural files in Version 6 are the same in Version
5. The Version 6 disk layout can theoretically support files and file systems up to
8 exabytes (2
63
). For the currently-supported maximum file and file system sizes,
point your Web browser to http://docs.hp.com/en/oshpux11iv3.html#VxFS and
view the Supported File and File System Sizes for HFS and JFS document under the
White Papers section. You must have an EBFS license to create a file system larger
than 32 TB. For 64-bit kernels, the maximum size of the file system you can create
depends on the block size:
Currently-Supported Theoretical 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.
239Disk layout
VxFS Version 6 disk layout