Continuing failovers on production server
I'm not familiar with this particular error but I've encountered situations when a two-node cluster had multiple failovers due to MPIO issues with the SAN LUNs. More often than not, it was resolved by updating HBA drivers. 

One other thing to look for is to ensure that the disk dependencies are properly set. The SQL Server service should be dependent on all that disks that are hosting the DB files and the backups as well as the disk with the drive letter acting as the mountpoint host. I've run into a few hosts where a missing disk dependency caused a disk to go offline before SQL could close out the DB files.