6-6 Dell PowerVault 720N, 740N, and 760N System Administrator and Command Reference Guide
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You can restrict access to the /home directory to particular groups by
using the chmod command to change access modes for the directory
using the -rw or -access options in the /etc/exports file to limit write privilege
to specific hosts
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The -access option lists the hosts that can mount exported directories. When you
use the -access option, only the hosts listed can mount the associated directory.
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The syntax for the -access option is as follows:
-access=
hostname
[:...:
hostname
]
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There is no limit to the number of host names you can specify with the -access
option. However, the length of a line in the /etc/exports file cannot exceed 1,024
characters.
NOTE: If you cannot fit all the host names in a 1,024-character line, you can use net-
groups in place of host names.
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The -root option lists the hosts that can mount exported directories as root. Hosts
that mount exported directories as root have full control over the directories and can
perform the following operations:
Create and delete directories and files.
Change ownership and group associations of directories and files.
Set access permissions for directories and files.

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The syntax for the -root option is as follows:
-root=
hostname
[:...:
hostname
]
/LPLWV
You can specify 1 to 256 host names with the -root option.

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You cannot use netgroup names with the -root option.