Linux and Windows continue to siphon server marketshare from Unix

The latest IDC numbers show that the trend of Linux and Windows stealing market share away from Unix is continuing. Windows servers showed a 15% increase in units sold over the same quarter last year while Linux servers showed a 20% spike. Unix units dropped 13.7%
As far as vendors go, IBM held a strong grip on the top spot, with HP second and Dell third.
Also, demand is increasing for blade servers and 64-bit servers.