[Linux-cluster] Fence device configuaration

["Ganesh B" <bganeshmail gmail com>]

We had 2 servers connected with common san storage.
   Do we really require fencing device.We had skipped fence deivce
   configuaration .
   *Is there any problem because of that.*
   **
   *Pls advive.*
   **
   *Regds*
   *Ganesh*