AIX CPU deallocation: How would you replace failed CPU dynamically on aix

To enable CPU deallocation you can use famous AIX smit or you can use command line syntax :

# chdev -l sys0 -a cpuguard=`enable` 

allright now how would you know if dynamic cpu deallocation is active. It’s easy to check :

#lsattr -El sys0  

Now if you have a failed CPU , you want to take it offline before pulling it out of box :

# cpu_deallocate 1