Comment by shellwizard

I still have to deal with a handful of UNIX systems at $WORK mostly AIX, and I don't really like it much compared to all of the Linux boxes that we mostly use. On one hand it seems to be rock solid and all of that but on the other it's like driving a Ferrari to go to work instead of a more sensitive Toyota. Most of them are being replaced by cheaper Linux servers where memory is not so pricey and mostly feel the same, albeit some memory allocation/caching difference