As with server evaluation criteria, the list of important technical features stayed much the same between the "2010 State of Server Technology" and 2011 "State of Server Technology" reports. Memory and processing capacity were the highest-ranking technical features considered for 2011 and 2012 purchases, both holding steady at 4.4 on a scale of 1-5 (five being most important).
Networking speed and efficient power and cooling were the only features to increase in importance. Networking speed/number of interfaces supported on the motherboard scored a 4 in 2010 and rose to 4.1 in 2011 to rank third on the list of features, surpassing redundancy.
"Yet another sign of virtualization's impact on server buying is that network I/O has displaced system redundancy, historically an important attribute for server buyers but now taken for granted, as the third most important technical feature," wrote author Kurt Marko in the 2011 report. "Other attributes, like energy efficiency, brand and internal storage, are tertiary at best."