For those about to rock, AC/DC is now on iTunes

AC/DC had famously resisted Apple’s siren call for a long time, but is now selling all of its albums on iTunes. The band joins a list of other acts who only recently started selling digital tracks on iTunes, including Metallica, Kid Rock and the Beatles.

The next big thing for data centers: DC power

Although we live in an AC-dominated world, DC seems poised for a comeback, particularly in data centers. Facebook adopted a DC architecture in its Prineville, Ore., data center. SAP spent $128,000 retrofitting a datacenter at its offices in Palo Alto, Calif., to rely on DC power.