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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><div><div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>If you’re still in the planning stage, there’s a lot more to think about. Your Asterisk failure detection will be very simplistic (is the process dead). Synchronization of data – without risking synchronization of corrupt data to a peer.</span><span style='color:#1F497D'> Prevent a deteriorating/failing peer corruption from corrupted the other peer (i.e. now shared resources). Awareness of upstream (e.g.: route/network) failures making the peer unavailable – and how to detect that. Etc. etc.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Here’s a good checklist of things to consider in your design: <a href="http://www.voip-info.org/wiki/view/Asterisk+High+Availability+Design">http://www.voip-info.org/wiki/view/Asterisk+High+Availability+Design</a><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>If you are building a small/home office HA then the free version of commercial tools may be the way to go. If have a $0 budget but for a larger installation, use the design guide above to help figure out which compromises to make. (Heartbeat / Linux HA is better than nothing).<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>-M-<o:p></o:p></span></p></div></div></div></div></div></body></html>