A customer with a Power 770 is planning a migration to an E870. The 770 has four 8Gb PCIe 2-port Fibre
Channel Adapters with all storage going through the SAN. The customer wants to keep the same WWPNs, and
avoid a SAN reconfiguration.
What procedure should be recommended?

A.
Rezone the SAN because the existing WWPNs cannot be reused.

B.
Order a PCIe Gen3 I/O Expansion Drawer and relocate the HBAs into the drawer.

C.
Move the HBAs from the 770 and install them into the E870 system node.

D.
Order new HBAs and modify the WWPNs in the ASMI.

Explanation:
Power 770 has six PCIe Gen2 integraded adapter slots per building block, with a system maximum of 24.
Power E870 has eight PCIe Gen2 integraded adapter slots per building block, with a system maximum of 16.
Note:
A World Wide Port Name, WWPN, or WWpN, is a World Wide Name assigned to a port in a Fibre Channel
fabric. Used on storage area networks, it performs a function equivalent to the MAC address in Ethernet
protocol, as it is supposed to be a unique identifier in the network.
A worldwide port name (WWPN) is a unique 64-bit identifier that is assigned to a fibre channel node port, called
an N_port. The storage area network (SAN) administrator assigns storage to a WWPN.
An HBA (host bus adapter) is an integrated circuit adapter or circuit board that is designed to provide physical
connectivity between a computer host and storage devices or a network.
Power Systems Capacity on Demand, page 47
https://public.dhe.ibm.com/systems/power/docs/hw/p8/p8ha2.pdf