May 2009 — IDC released a quarterly update to their Worldwide Quarterly Server Tracker, citing market share figures for the 1st calendar quarter of 2009 (1Q09). Consider these telling facts:
(Source: All of the following market share figures are for the 4th quarter (unless otherwise noted) and represent worldwide results as reported by the IDC Worldwide Quarterly Server Tracker, May 2009)

HP shipped over 148,000 more servers than #2 Dell.
HP shipped 2.5 times as many servers as #3 IBM and 9.0 times as many as #4 Sun.
HP gained most total server unit market share year over year of the top five vendors (+2.0 percentage points).
HP was #1 (tied) in total server revenue market share.
HP shipped more than twice as many blade servers as any other vendor.
HP gained 2.2 points of revenue market share while IBM lost 3.1 points of revenue share to fall to 24.9%. r.
Dell is a distant third in blade server revenue with 8.6% share.
HP’s x86 revenue share was 15.1 points higher than its nearest competitor, Dell who lost 0.8 points year over year
HP’s x86 revenue share was 20.0 percentage points higher than IBM.
In the combined EPIC+RISC market, HP gained 3.8 points of unit share year over year, the most among the top five vendors in this market.
HP has a commanding 37.7% revenue share of the Windows market and leads the nearest competitor, Dell, by 14.5 percentage points.
In terms of Linux revenue share HP leads #2, IBM, by 18.0 points and #3, Dell, by 21.6 points. HP shipped 13.8 times the number of Linux servers than Sun did.
In terms of high-end UNIX revenue HP has a 34.2% share, 7.0 points higher than IBM and 19.0 points higher than Sun.
HP holds a 35.7% unit market share worldwide, which is 2.5 times more than IBM’s unit market share and 8.9 times the unit share of Sun.
HP holds a 33.7% revenue market share worldwide which is 2.6 times the revenue share of Dell and 2.8 times the revenue share of Sun.
HP outpaced IBM in Blades, Windows and Unix high-end units and revenue market share gain year over year as well as in total server, Linux, x86 and RISC+EPIC unit share gain year over year.
HP outpaced Dell in total server, x86 and Windows revenue and unit market share gain year over year as well as blade server revenue gain year over year.