Originally posted by ruthan
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HP-UX is pretty entrenched in some industries like pharma and telecom, but HP made the strategic error of hitching their wagon to Itanium, which will guarantee its eventual death. After all, 11iv3 was released in 2007 and there hasn't been much new since then. They've even reduced their quarterly patch bundles to once annually now, so development of HP-UX has been on the decline for years. There will be no new major HP-UX OS version, and Itanium chips haven't been refreshed since 2012. This is effectively a dead-end platform.
I disagree with you on AIX however. It's the most robust of the 3 operating systems you mentioned, and I actually enjoy using it. It's modern, it's fast, and it's competitive. The POWER processors it runs on are under active development, and they really kick ass. The new POWER9 chips come out this year, with 12 or 24 cores, 4 Ghz clock, and 120 MB of on-die L3 cache, all built on a modern 14 nm process node. AIX and POWER are not only alive and well, they are thriving! Add to this, that IBM is very open source and Linux friendly, so I think the continued success of AIX/POWER is a Very Good Thing(tm).
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