High Avaliable in the PostgreSQL.

Hi,


    I need solution to PostgreSQL for High Available, originally
was 99,7% but considering the current necessities, change percentual
to 99,99%. I think in solution probability  pgpool-2 or Heartbeat +
GFS. The PostgreSQL servers will be in different physical places.

     Suggestions?



Kind Regards,
--
Fernando Ike
http://www.midstorm.org/~fike/weblog