The HPE 3PAR StoreServ Persistent Port feature allows a host to continue I/O operations uninterrupted during a firmware update. It achieves this by automatically failing over the ports of the storage system to a peer port on another node, ensuring continuous data availability and service delivery. This feature is crucial during firmware upgrades or any maintenance activity where minimal disruption is desired.
HPE Storage Reference:
HPE 3PAR StoreServ Architecture
HPE 3PAR StoreServ Features