This started with a simple recommendation to put the business client's data on an external RAID drive to provide some redundancy seeing they are not using a real server. Then it turned into a nightmare. I've swapped the drive out twice since with the same results. After installing the drive and testing it, it will run for several hours, maybe overnight. Then writes start failing (see system error log attached). In the WD utility, it doesn't even see the drive. The utility starts and shows the message no supported drives found. I can still browse the drive, but cannot do any write operations. Power cycling the drive brings it back and the cycle starts again.
I have tried running the drive in both RAID 0 (mirror) and RAID 1 (stripped) modes with the same result. The drive will do JBOD, but I haven't tried that yet. The BIOS of the host Dell XPS 8700 is at the latest release level. OS is Windows 8.1. The only thing unusual about the Dell host is that, in addition to the SATA boot drive, it also has a solid state Samsung drive they use as a data drive to host a business database.
Western Digital support has been useless for this problem. All they know how to do is replace the drive.