SP failover testing

Hi,

As per the BCP testing plan, we will be testing the HA of the 2 SP(Storage Processor) in CX4-480.

Applications on SPA will be failed over to SPB and vice versa.

environment:

->RPA

->Cellera (direct connection)

->VM-servers

->Winows servers

->AIX servers

Managemnt tool: Unisphere

Please help me, what are the precations need to take before sutdown the SP?

How can I sutdown the single SPA/SPB?