Re: about 12 per cent of servers run non-Windows OSs!?
Seriously?That doesn't smell right at all.
Check the source, and the data set.
That 12% figure comes from Spiceworks, who provide server monitoring software. Server monitoring software which can only be installed on Windows.
So it's far more likely that what this particular statistic is actually indicating, is that Windows-centric companies use something other than Windows on 12% of their servers.