I was getting “unable to save due to bad sector errors” messages.
This is a 5C with 5 12 T drives, and about 10 T of data stored on these 5 drives. Plenty of unused space.
I’m using “Dual Drive Redundancy”.
I ran CHKDSK /r and after 250 clusters checked, out of 980,000, I got the error “the disk does not have enough space to replace bad clusters”. Which would mean massive failures on most of the drives. Unlikely.
Drobo suggested I reverse the orientation of the USB cable. Which is puzzling, since the plug is rotationally symmetrical.
I did that, and a new CHKDSK has been running for 4 days, no errors reported, and has checked 390,000 out of the 977,000 clusters.
I’m assuming the rotated USB plug fixed something. I asked DROBO for some details, but haven’t gotten an explanation.
In the mean time, CHKDSK will take another 5 days to check all 60 T’s of data. I’d like to get back to work on the DROBO, but I’m concerned about what’s really going on.
The “bad sector” report seems spurious.
Does anyone have any technical explanation for what’s going on?
Thanks in advance.