Im working with a an iSeries Power 7+ server and the operating system is V7R2, is this a version of AIX or a completely different OS?

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    It's either IBM i, aka OS/400 or AIX. Can you run uname -a (or oslevel)? If yes, it's AIX, IBM i apparently has a command named GO LICPGM for this (www-01.ibm.com/support/docview.wss?uid=swg21634678). Theoretically, it could even be RHEL 7.2, but this would be a strange way to describe this OS.
    – Sven
    Oct 9, 2017 at 16:53
  • Appreciate it, trying to determine what I need to do to compile libcurl into functioning DLL on this OS, but there is so much non-specific info out there on iSeries stuff it was tough to determine. Oct 9, 2017 at 17:04

2 Answers 2


It is one of the operating systems supported on IBM Power Systems alongside AIX and Linux as well as on IBM PureSystems alongside AIX, Linux and Windows. source

V7R1,2,3 is a sucessor of OS/400.

A fact on the name;

When IBM announced the new Power Systems line of servers on April 2, 2008, they renamed the operating system from i5/OS to IBM i[3] and changed the version identifier format from VxRxMx (Version, Release, Modification, e.g. V6R1M0) to the more standard format (e.g. 6.1).

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    The part about IBM having changed this versioning scheme prevented me from outright stating it's OS/400. Most likely it's correct though and this is just a not-yet changed part of the OS. On the other side: AIX is somewhat familiar if you know any Unix type OS (like Linux) - OS/400 is very different from what I understand (unfortunately, I've never used any of this stuff).
    – Sven
    Oct 9, 2017 at 16:56

AIX and OS/400 are two completely different animals. The only significant relation between the two are that they are both developed by IBM.

AIX is IBM's version of UNIX. OS/400 (i5/Os) is not a Unix operating system. It is the successor to IBM's System 36/38, completely different operating system.

OS/400 does have a Unix based shell that can be used to port and run AIX applications, but that is about it.

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