The Storage panel shows one of disks as being “Bad”. Clicking the SMART Data link opens a rather truncated panel showing no useful hints of what is wrong. There are no raw values to check, no SMART errors, and no failure indicators.
Checking the data via smartctl shows no problems for either of the drives:
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
SMART Error Log Version: 1
No Errors Logged
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed without error 00% 50368 -
# 2 Short offline Completed without error 00% 50363 -
# 3 Short offline Completed without error 00% 0 -
# 4 Short offline Completed without error 00% 0 -
So, what is the problem? What is the web portal warning me about?
How are the drives configured? JBOD? Raid 0? Raid 1?
In the meantime, I would not turn it off (cycle power) assuming you can still access all of your files. I’d backup all critical files to another drive/location before you do anything else.
In the dashboard, go to Settings/Utilities and under System Diagnostics, select View logs. You can filter the results to make scrolling through them easier.
I would run the quick test AFTER you backup your files. If passed, run the full test.
Configuration is RAID 1. Only one drive seems to be having issues so panic level is low.
Logs have no Critical entries and a few CIFS failed logins.
I’m not sure what the “Tests” in the web panel too, but the Short one seems to simply execute smartctl -t short for both drives. The web panel reports no errors and there’s a new entry in the smartctl output for the test.
I’ll check what the full test does, but thus far the problem is still there - MyCloud web portal reports an error, but is there an error?
There is an error with one of the drives after all. A Full self test resulted in the following:
Disk1 Passed - Full disk test completed successfully.
Disk2 Failed - Full disk test failed. Please backup your data and replace this disk. If you need further assistance, contact WD Support.
smartctl for the second drives shows an error too:
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed: read failure 90% 44424 10741472
# 2 Short offline Completed without error 00% 44424 -
# 3 Extended offline Completed without error 00% 44401 -
# 4 Short offline Completed without error 00% 44396 -
# 5 Short offline Completed without error 00% 0 -
# 6 Short offline Completed without error 00% 0 -
Thanks for the tip @Saudade. That’s enough to warrant a replacement.
Two interesting points about this. Two SMART Extended tests are logged only 23h apart, both occurred when the drive was already failing. The earlier one was initiated by smartcl -t long and came up clean, while the later one started by clicking Full test from MyCloud web portal reported an error. The second point is that MyCloud web portal logged a failure before any SMART indicators did.
