Notices  and  statements  in  this  document 
The  caution  and  danger  statements  that  appear  in  this  document  are  also  in  the 
multilingual  Safety  Information  document,  which  is  on  the  IBM  System  x 
Documentation  CD.  Each  statement  is  numbered  for  reference  to  the  corresponding 
statement  in  the  Safety  Information  document. 
The  following  notices  and  statements  are  used  in  this  document: 
v  Note:  These  notices  provide  important  tips,  guidance,  or  advice. 
v  Important:  These  notices  provide  information  or  advice  that  might  help  you  avoid 
inconvenient  or  problem  situations. 
v  Attention:  These  notices  indicate  potential  damage  to  programs,  devices,  or 
data.  An  attention  notice  is  placed  just  before  the  instruction  or  situation  in  which 
damage  could  occur. 
v  Caution:  These  statements  indicate  situations  that  can  be  potentially  hazardous 
to  you.  A  caution  statement  is  placed  just  before  the  description  of  a  potentially 
hazardous  procedure  step  or  situation. 
v  Danger:  These  statements  indicate  situations  that  can  be  potentially  lethal  or 
extremely  hazardous  to  you.  A  danger  statement  is  placed  just  before  the 
description  of  a  potentially  lethal  or  extremely  hazardous  procedure  step  or 
situation.
Features  and  specifications 
The  following  information  is  a  summary  of  the  features  and  specifications  of  the 
server.  Depending  on  the  server  model,  some  features  might  not  be  available,  or 
some  specifications  might  not  apply. 
Racks  are  marked  in  vertical  increments  of  4.45  cm  (1.75  inches).  Each  increment 
is  referred  to  as  a  unit,  or  “U.”  A  1-U-high  device  is  1.75  inches  tall. 
Notes: 
1.  Power  consumption  and  heat  output  vary  depending  on  the  number  and  type  of 
optional  features  that  are  installed  and  the  power-management  optional  features 
that  are  in  use. 
2.  The  sound  levels  were  measured  in  controlled  acoustical  environments 
according  to  the  procedures  specified  by  the  American  National  Standards 
Institute  (ANSI)  S12.10  and  ISO  7779  and  are  reported  in  accordance  with  ISO 
9296.  Actual  sound-pressure  levels  in  a  given  location  might  exceed  the 
average  values  stated  because  of  room  reflections  and  other  nearby  noise 
sources.  The  declared  sound-power  levels  indicate  an  upper  limit,  below  which 
a  large  number  of  computers  will  operate.
 
4  IBM  System  x3650  Type  7979:  Installation  Guide