The 3Par of a customer crashed in 2017 as well
We had the same with the 3PAR operated by the city council of a mid sized city. unavailable for days as a result of an unplanned power outage.
HPE support is dismal, requiring sticking a NATO alphabet under the screen for explaining things to the, mostly Indian, support engineers. Next time we help customers with tenders exceeding several hundred of thousand Euro's, we will recommend to put in a requirement that support is provided by European or US based staff.
Annual support costs for the SAN run into the high 5 digits, for that HPE can not even provide support which is pleasant to use.