Decommission AIX partition

This activity depends and changes according the company environment , but also these are the common steps that can be helpful to decommission a server( say AIX LPAR)

• Take a mksysb image from a partition.
• Make sure that filesystem and applications backups are up to date and backups can be found from TSM or from any backup Tool used in the Environment ( llike Veritas Backup etc..)
• Inform monitoring team that partition is going to be removed and monitoring should be stopped.
• Stop applications on lpar.
• Inform storage team that partition is going to be removed, they will handle the backups.
• Inform Monitoring team that ip-addresses from that partition can be freed.
• Inform network team that partition is going to be removed .Also inform network team if there is any physical cabling, switch ports needs to be shut down.
• Update documentation  (other system documentation) for the Future reference.
• Remove volumegroups, filesystems and logical units from server.
• Remove logical units from disk systems.
• Stop lpar.
• Remove lpar profile with HMC.

Inform to all the teams regarding the System decommissioned .