Re: Amidst all the wailing and knashing of teeth here
AIX Features that have no common Linux equivalent.
Live OS upgrades
Active Memory Expansion (Inline memory compression)
Active Memory Sharing (connect swap device to hypervisor and let OS overcommit memory)
Memory De-duplication
Great Cohesive admin framework
ASO/DSO (automatically tune the operating system for the workload)
Workload Partitions
Suspend / Resume
Great Filesystem (JFS2) and volume manager
"ODM" as opposed to DevFS
Transactional Memory
Support for CPU embedded accelerators
Memory Protection Keys
etc..
etc..