Being focused on High Availability means not only

Being focused on High Availability means not only focusing on unplanned downtime.  It is also about at passionate resolution to eliminate planned downtime.  A major indirect cost of IT Operations.    An article by Dell quotes "Infonetics Research study, The Costs of Downtime:  North American Medium Businesses 2006, found that mid-market enterprises (101-1,000 employees) lose an average of 1 percent of their annual revenues to downtime.  Even more startling, another study has found that up to 40-50 percent of businesses that have suffered major service interruptions never recover completely, and fail within two to five years."  The article goes on to say the answer is virtualization.

https://www.dell.com/downloads,global.power/ps4q06-200701169-ziff.pdf