The stats are showing ATA CRC errors, which is not a normal thing to have. Check the cabling, or get new SATA cables, as short in length as possible.

The little yellow triangle things indicate to me that the drive is starting to have issues. WD drives do behave strangely compared with other drives here, so it's never clear exactly what the heck is going on with those attributes. Other than that those are never good to see non-zero values on.

The nice thing, is that I *think* both drives are probably still readable in full. The "pending" bad sector counts seem to mean that the drive has temporarily marked some locations as "bad", but intends to try correcting that the next time those locations are overwritten with fresh data.

After which they may (or not) go bad again.

Were they my drives, I'd probably relegate them to non-critical uses, or scrap them. But given your situation, you may want to try to hang onto them until they show worse symptoms.

In which case, run a low-level format on each drive, by issuing an ATA SECURITY ERASE command to each of them. This will destroy all data, and correct all current bad sectors.

MS-Windows does NOT know how to do this, though you might find a utility for that system which does know how.

Here, I would just connect them to a Linux box (or boot from a Linux USB stick), and determine the device names they got assigned (kinda like MS-Windows drive letters), using the "lsscsi" command.

Assuming they got named /dev/sda and /dev/sdb they could then be erased as follows:

sudo hdparm --security-set-pass NULL /dev/sda
sudo hdparm --security-erase NULL /dev/sda

and repeat with /dev/sdb to do the other one in another window, so that both commands run in parallel to save some time. These commands will take HOURS to complete.

Cheers