PowerHa Migration Procedure

Here in this post we will the steps involved for PowerHA migration

1. Take pre checks, mksysb, cluster snapshot,clone rootdisk and boot with cloned disk
2. Stop cluster on both nodes and reboot nodes
   smitty cl_stop
   select all nodes leave rest as default
3. After reboot start cluster services
   Smitty cl_start
   select all nodes leave rest as default
   
4. Add repository disk
   Smitty sysmirror
   Cluster Nodes and Networks
   Manage Repository Disks
   Add a Repository Disk
   Repository Disk [] (here select disk from pick up list)
   Note : Before adding repository disk make sure disk has same number size and after adding have same PVID
   
5. Sync cluster
   Smitty sysmirror
   Cluster Nodes and Networks
   Verify and Synchronize Cluster Configuration
   
6. verify CAA disk added to vg by below commands
   lsvg –p caavg_private
   clmgr query repository
   
7. Bring down cluster
   smitty cl_stop
   
8. Sync cluster
   clmgr sync cluster
   
9. replace repository disk to new disk
   clmgr replace repository hdiskXX

10.Sync cluster
clmgr sync cluster

12. Stop cluster services and export vgs on both nodes
    smitty cl_stop
    exportvg vgname
13. .Bring down servers and handover to SAN for Encapsulation
    
14. After Encapsulation import cluster vgs on both nodes with major number
    Get disk number by comparing LUNID’s PRE output of lspv –u output with current one
    importvg -c -y vgname -V majornumber hdiskXX
    
15. Start Cluster services manually
16. Bring up RG’s manually as before in nodes