Early this year, at an informal gathering of European data centre associations kindly organised and hosted by Stijn Grove of DDA, conversation turned to a perennial problem – the fact that nobody outside the sector really understands what data centres are. Garry Connelly of Host In Ireland suggested that the group compile a list of common myths. Benedicte Fasmer Waaler from Norway and Emma Fryer from the UK got to work and came up with this starter for ten. A summary version has been published in the April version of Data Economy Magazine (pp56-57) and an illustrated precis has been circulated by Host in Ireland through social media. This longer version is the original text that those were derived from.