Dude, why do you quote articles 7-8 years old?  Things change.  In the 50's 
they said we'd all be flying to work like George Jetson in the 2000's, yet I 
drove my car today.  Things change.

You also fail to understand that Linux and x86 do not have the RAS capabilities 
of POWER architecture.  Do you realize almost every time a server crashes and I 
look in the logs to find an answer all I get is "crash."  With AIX on POWER, 
those features are available to identify what caused the problem.

AIX and Solaris were engineered.  Linux wasn't and isn't engineered.  Red Hat 
find a bunch of open source tools and throws them into their release and calls 
it good.  

Clustering on Linux on x86 is a joke at best.  It doesn't have anywhere near 
the reseliency of POWER/VM (HACMP), Sun Cluster, or Veritas Cluster Suite.  

Virtualization on Linux on x86 is a joke.  AIX has had features for 10 years 
that Red Hat says it will have *some* of them in RHEL6.  Ten years after AIX!  
Besides, there are problems with Red Hat virtualization, and I've ran into 
them.  Opened a case with Red Hat and they never found an answer.  Surprise.  
Patching recently broke clustering at my work.

Disk management in Linux is a joke.  I have to "echo '- - -' blah blah" to a 
file to add or delete disks.  

Red Hat charges hundreds per server to do things like provisioning and 
management.  Features I can do with NIM can cost $600 or $700 per machine with 
RHEL.  When you include 1000 servers, you are talking serious money.  With KVM 
they'll have a new way to manage them, at a price of a few hundred per virtual. 
 I fail to see where companies think they are saving money with RHEL.  They're 
not.

Linux's ext3 doesn't have CIO for no filesystem cacheing natively unless you go 
with Veritas.

Linux has none of the these AIX features:
Advanced First Failure Data Capture.  Enterprise Workload Mangement.  Resource 
Set Management.  Workload Manager.  WPARs.  Live Application Mobility.  Cluster 
Systems Management.  Kerenl Recovery.  Storage Protection Keys.  ProbeVue.  
Active Memory Expansion/Adviser.  xmtopas.
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