VxFS Version 7 disk layout
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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 SmartTier. The Version 7 disk layout can theoretically support files and file systems up to 8 exabytes (263). 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:

Block Size

Currently-Supported Theoretical Maximum File System Size

1024 bytes

68,719,472,624 sectors (≈32 TB)

2048 bytes

137,438,945,248 sectors (≈64 TB)

4096 bytes

274,877,890,496 sectors (≈128 TB)

8192 bytes

549,755,780,992 sectors (≈256 TB)

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.

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