using this blog i will try to share AIX knowledge
Latest release : AIX 7.2 TL03
Previous version :AIX 6.1,AIX 5.3,AIX 5.2
AIX version Feature
AIX 5.3 Virtualization Support, Micro-Partitioning, Dynamic Logical Partitioning
AIX 6.1 AIX workload partition,Multiple shared Processor and AIX Live Partition Mobility
AIX 7.1 Multiple Shared Processor Pools , AIX Live Partition Mobility, AIX 5.2 WPARs for AIX 7
AIX 7.2 Live Kernel upgrade and server based flash caching
Types of installation in AIX:
1.New and complete overwrite
2.Migration
3.preservation installation
New and complete overwrite
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Installation of New OS on LPAR and Physical BOX.
Migration installation:
================
upgrade from AIX 5.3 to 6.1 ,6.1 to 7.1 and 7.1 7.2
/tmp overwritten in this type of installation.
preservation installation
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we use preservation installation when you want to preserve user data in the rootvg.
this method overwrites the /usr ,/var ,/tmp and /root filesystem.
/etc/preserve.list -contains file will be preserved during instillation.