According to the latest IDC Quarterly Server Tracker report the growth of Linux as far as the US x86 server market is concerned has started to slow. In fact, it is has done more than just slow, when compared to Windows-based server growth it has slipped backwards. In 2005 Windows Server growth was sitting comfortably around 25 percent and Linux was right up there at 53 percent. Fast forward to now and that IDC report suggests that as far as figures for 2006 are concerned Linux has dropped to an astonishing -4 percent growth rate. Unfortunately for Linux, the growth of Windows-based servers has stayed positive racking up figures of 4 percent during the same period.

It has been suggested that Linux adoption has fallen off the pace because it is mirroring the rate of migration from Unix to Linux which has also slowed right down. It has also been suggested that Linux is losing market share to Windows, based upon these latest figures. Interestingly, when you talk to industry analysts about Linux-based enterprise applications they paint a different picture, one of increasing and continued growth in an area of the market where Microsoft has historically had the major presence. So it's all a matter of swings and roundabouts rather than massive cause for concern in both camps methinks.

Observers should also bear in mind that trying to double-guess OS trends based upon numbers of servers being shipped is notoriously dangerous territory. More so when we are talking Linux servers because of the number of recycled server deployments that exist in the enterprise space. All we can say for sure is that, in the US at least, Windows Server shipments exceeded the number of X86 server shipments during 2006. Draw whatever conclusions you will from that…