Re: "Yes, I have experienced the issue of HPE ignoring warnings until the system went down. "
Au contraire monsieur.
Sir Loin of Beef had a 3Par 7250 model QZF rev 1 with seven UFS400 rev B drive trays cabled in configuration A.
The ATO had a 3Par 7250 model QZF rev 2 with nine UFS400 rev C drive trays cabled in configuration B.
These are totally different and in no way related, so the failures are completely unrelated and unique, have never happened before and HPE are totally telling the truth.