Sup Module replace at N7k at Single Sup design

[thiru.vel10]

N7K A and N7K B has single Sup module, N7KB VPC role is secondary .N7KA vac role is primary ( as per the Role Priority and Preempt not configured). Need to replace the Sup module 

at N7K A without any down time.   Please suggest the Process. 

Note : New Sup has target NSIOS and Servers are connected as Dual Homing scenario.  Attached diagram for your reference . 

[sbhadrav@cisco.com]

According to the following Cisco documentation you can replace a standby supervisor module and copy the nx-os from the active supervisor module to the standby supervisor module.
http://www.cisco.com/en/US/docs/switches/datacenter/sw/5_x/nx-os/high_availability/configuration/guide/ha_system.html#wp1081756