The  server  can  be  turned  off  in  any  of  the  following  ways: 
v  You  can  turn  off  the  server  from  the  operating  system,  if  your  operating  system 
supports  this  feature.  After  an  orderly  shutdown  of  the  operating  system,  the 
server  will  be  turned  off  automatically. 
v  You  can  press  the  power-control  button  to  start  an  orderly  shutdown  of  the 
operating  system  and  turn  off  the  server,  if  your  operating  system  supports  this 
feature. 
v  If  the  operating  system  stops  functioning,  you  can  press  and  hold  the 
power-control  button  for  more  than  4  seconds  to  turn  off  the  server. 
v  The  service  processor  can  turn  off  the  server  as  an  automatic  response  to  a 
critical  system  failure. 
v  You  can  turn  off  the  server  through  a  request  from  the  service  processor.
 
40  IBM  System  x3650  Type  7979:  Installation  Guide