Nancy,
We run on AIX and have never regretted it. There has been interest in Linux expressed but that is always cost based. Never has anyone even attempted to indicate it was more reliable.
Since we have a very reliable and usable environment with AIX and since the importance of the Integration Engine within the institution is high, moving to another platform just because it is cheaper does not seem to be attractive.
From a personal point of view, I would be very reluctant to utilize a Windows environment for Production.
I am also always leery of ‘public domain’ anything – just me I guess.
Jim Kosloskey
email: jim.kosloskey@jim-kosloskey.com 29+ years Cloverleaf, 59 years IT - old fart.