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 

AIX 32 bit/64 bit Kernel Support

While installing AIX 5L you can choose a 32-bit or 64-bit Kernel.

Both 32bit and 64 bit kernel supports JFS2 (filesystem that allows to handle very large files).

• ok. now Question is on AIX how would you know if your p-series server supports 32bit/64 bit kernel ? Answer is :

bootinto -y tells you Hardware is enabled for 32bit/64 bit applications

• bootinfo -K gives you interger value 32 or 64
  
• svmon -P <process-ID> will let you know if runnig process is 32 or 64 bit