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The VxFS vx_maxlink tunable determines the number of sub-directories that can be created under a directory.

A VxFS file system obtains the value of vx_maxlink from the system configuration file /etc/system. By default, vx_maxlink is 32K. To change the computed value of vx_maxlink, you can add an entry to the system configuration file. For example:

set vxfs:vx_maxlink = 65534

sets vx_maxlink to the maximum number of sub-directories. Valid values are 1 to 65534 (FFFE hexadecimal). Changes to vx_maxlink take effect after rebooting.