Disk layout 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 up to 8 terabytes (2⁴⁰) and file systems up to 8 exabytes (2⁶³). The maximum file system size that can be created is currently restricted to 2³⁵ blocks. For a file system to take advantage of greater than 1 terabyte support, it must be created on a Veritas Volume Manager volume. For the 64-bit kernel versions of AIX 5.2 and 5.3, the maximum file size is 8 terabytes with the largefiles flag set and 2 gigabytes with the nolargefiles flag set, while the maximum size of the file system you can create depends on the block size:

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.

The Version 7 disk layout supports group quotas.

See About quota files on Veritas File System.