<html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> On 08/09/2011 07:31 PM, Mustafa Qasim wrote: <blockquote cite="mid:CAFhjsX+UWLhkz63yGA9chJ6N8RQnJVgezsyJ3zp1q5tKzjkd5w@mail.gmail.com" type="cite">Hi, Can anyone refer to documents/articles on Machine Instance high availability and physical hardware failure (HDD or Complete Node etc) in Ubuntu Enterprise Cloud. Thanks -- Mustafa Qasim <img moz-do-not-send="true" src="http://www.google.com/sync/images/gmail.png" alt="" height="16" width="18"> <a moz-do-not-send="true" href="mailto:mustu@linux.com" target="_blank">mustu@linux.com</a> <img moz-do-not-send="true" style="vertical-align: baseline;" src="http://www.copywriting.com/pix/icon-blog.gif" alt="" height="18" width="18"> <a moz-do-not-send="true" href="http://blog.mustu.info/" target="_blank">http://blog.mustu.info</a> <a moz-do-not-send="true" href="https://www.linuxfoundation.org/about/join/individual?lftrkr=MEMWIDGETb300x100_2010" target="_blank"><img moz-do-not-send="true" src="https://widgets.linuxfoundation.org/badge.php?size=300x100&lfu=NWU0ZmQ0ZjZjZWM4ZmFkZWFkMWZlNTMyZmQ2MmFkZTg6bXVzdHU="></a> <fieldset class="mimeAttachmentHeader"></fieldset> </blockquote> Hi Mustafa, Instance HA (as in protection against hardware failure) is not a feature of UEC, and more generally is not a feature of cloud computing. The correct way to think about this problem, is how to architect your software such that an instance failing becomes "not important", causes no data loss or service interruption Regards </body> </html>