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HACMP Classic vs. HACMP/ES vs. HANFS 203
For switchless RS/6000 SP systems or SPs with the newer SP Switch, the
decision will be based on a more functional level.
Event Management is much more flexible in HACMP/ES, since you can
define custom events. These events can act on anything that
haemd can
detect, which is virtually anything measurable on an AIX system. How to
customize events is explained in great detail in the redbook
HACMP
Enhanced Scalability
, SG24-2081.
If you have an NFS server that you need to make highly available, especially
if it is heavily used, and NFS file locking is a major issue, you will need to run
HANFS for AIX.