"Lost" is probably headline overstatement. "Loses access to" would make much more sense and would mesh with a single point of failure. Since the article indica

"Lost" is probably headline overstatement. "Loses access to" would make much more sense and would mesh with a single point of failure. Since the article indicates that the failover system was also affected they may have triggered a bug in the storage systems or it could be something completely different like "someone let the magic smoke out of our bespoke networking equipment and we didn't realize the closest spare was disassembled in HP's network engineering lab in California."