During the upgrade of the HPE 3PAR StoreServ 8200 to include 4-port 16Gb FC adapters, the Multipath I/O (MPIO) service will handle failover automatically. This ensures that if any of the paths are temporarily unavailable during the upgrade, the servers will still have continuous access to the storage via the remaining paths. MPIO is designed to manage multiple paths and will reroute traffic through available paths, minimizing the impact of the upgrade on storage availability.
References:
* HPE 3PAR StoreServ MPIO and Availability
* HPE 3PAR StoreServ Port Persistence