I have had this drive for about 3-4 years and set it up as the default spanned volume. On Tuesday, Oct 19th, I tried to access a folder on the drive; this folder contained documents copied from other machines in my home network. The folder was blank. The drive then started flashing the inner then outer rings in succession. I launched the Shared Storage Manager and it listed Drive Status: Drive B Fail.
Turned the device off; waited 10-20 seconds; turned the device back on. It then booted up and listed Drive Status: Synchronizing. The rings spun around each other for the next four days.
At various times I tried to read the drive and discovered that the documents folder was back; I tried to back it up to another drive, but the Xcopy operations have been interrupted by [File creation error - Configuration information could not be read from the domain controller, either because the machine is unavailable, or access has been denied]. I finally found a util called Unstoppable Copy that pounded the device until it was able to copy everything.
In the process I purchased several 500Gb drives to make backups and replace the 'failed' drive. I also found a util called HDClone that allowed me to make a dupe of my B drive using a SATA Raid card in my primary system to connect the old B drive and a replacement. After I put that in the worldbook I copied everything in a matter of days. The worldbook was pissed off the whole time cause I wouldn't "format the new drive B", but I ignored it.
Then after the copy was secured I went ahead with the format…3-4 days later still in sync mode….sigh….took the B drive out, wiped the partitions, re-installed, changed the drive setting to Raid, reformat, sync for another week….sigh…..I've tried all kinds of combinations and it always loops into infinite sync. I've watched it finish a sync, blue rings ripple, then flash drive fail, then it starts all over again…heavy sigh.
So that is what got me to the point of trying to abandon the Worldbook OS all together and replace it with FreeNAS.