I was having emcpower devices in veritas VCS.
Just few days back I have migrated emcpower devices from one server to other server .

After adding new server to same old server's Storage Group I rebooted the new server .. Devices got visible to new server .. Initially on new server i saw OS native devices sda,sdb devices in "vxdisk -o alldgs" list output .
Then i exported the emcpower devices mapping from old server and imported on new server using "emcpadm" . Then ran "vxdctl enable" and now i can see emcpower devices in "vxdisk -o alldgs list" o/p.

It was obvious that initially i saw OS native devices sda,sdb devices in "vxdisk -o alldgs" list o/p but what does the emcpadm import_mapping has done which tells veritas that he has to show emcpowerdevices and not OS devices.

Can somebody eloberate what exactly happened during import_mapping ( other than renaming the powerdevices to device name in map file ) ?? What does it tell veritas. Does it create any device tree ??

According to my plan I thought i have to do "powervxvm install" and "powervxvm online" and that will tell Veritas that he has to use emcpowerdevices and not OS native devices.

My migration was sucessful but this is the question remain un-answered for me !!!