Test case Performance&Tuning the system after Migration Sol10 to Z/OS

Hi,

I am Engaged in a Migration project , where the system will be migrated from Solaris 10 to Z/OS

my role will be to Test the Performance & Tuning the system in BASIS after the migration. I would be grateful if anyone can advice me with the test scenarios, stuffs to be tested after the migration.

Thanks for your time and Help.

Kannan...