"By operating system, Linux-based servers were the only category
that saw a revenue increase, rising 2.2 per cent to $2.6bn in the
quarter. Linux server sales were bolstered by those
density-optimized machines and now account for 18.4 per cent of all
shipments. Windows-based servers continue to dominate, but shrunk a
bit in Q4, down 1.5 per cent to $6.5bn. Unix machines took a 10.7
per cent dive in Q4, to $3.4bn, as IBM grew its Unix revenues 2.5
percent and grabbed 7.9 points of market share. Its rivals all had
declines in this space.
"If you do the math on what remains, then the others ? dominated
by IBM's System z mainframes but including other proprietary iron,
too ? accounted for $1.7bn, down 27.5 per cent compared to the same
period last year."