Here’s an interesting article showing the importance of having adequate surge protection and uninterruptable power supplies – along with sufficient onsite and offsite backups.
http://www.datacenterknowledge.com/archives/2010/12/22/2010-the-year-in-downtime/
To this for Australian major outages we would have to add the NAB debarcle in November
http://www.itnews.com.au/News/239725,nab-it-outage-cuts-payments.aspx
And CBA in August
http://www.itnews.com.au/News/230464,commbank-blames-outage-on-security-update.aspx
For power protection we always recommend to clients their keys systems from power surges, blackouts and brown outs (low voltage events that can damage components) –