chown to a local administrators group Isilon

Hi,

On our Isilon OneFS, we have a local Administrators group. I would like to change the owner of the directory to this local Administrators group.

#chown  -s :Administrators test10 

The cli will not change anything.

# chown Administrators test10

chown: Administrators: illegal user name

# chown -s group Administrators test10
chown: Administrators: No such file or directory

# chown -s group:Administrators test10

that cli will change the owner to "OWNER: user:group"

But I can use the chmod to add this local administrators and assign the permission, it also shows as "BUILTIN\Administrators" at Windows ACL permission.

#chmod +a group Administrators allow dir_gen_all,object_inherit,container_inherit test10

#ls -led test10
drwxrwx--- + 2 root wheel 0 Mar 26 13:31 test10
OWNER: user:root
GROUP: group:wheel
0: group:Administrators allow dir_gen_all,object_inherit,container_inherit

So how can I chown the directory to " OWNER: group:Administrators"?

Thanks,

Cher

Thanks,

Chi