New Halana was an inhabited planet colonized by the Halanan species. The planet was terraformed by Federation Professor Gideon Seyetik, who described the end result as a "paradise". (DS9: "Second Sight")
According to the script, the pronunciation for Halana was "huh-LAN-nuh". 
According to the Star Trek: Star Charts ("United Federation of Planets I"), New Halana was listed as a member planet of the Federation in 2378.