Thanks for your message and the information.
According the details, I'm sure that the hard disk is perfect, there is no problem with it.
Ther is absolutely no bad sector present - otherwise the health % and the text description in Hard Disk Sentinel would surely mention that.
> Disk: #2: WDC WD60EFRX-68L0BN1: 100 %
This confirms that generally the hard disk perfect, there is no problem (bad sector or any other issue) found.
> Short Self-Test passed
Yes, as the drive is perfect, it is completely expected.
> Extended Self-Test has many hours left to run.
Yes, this is completely normal and expected. As described in the Help, the extended self test may run for much longer than estimated when the drive used during the test as all reads/writes delays the execution of the test.
Usually if the status is not perfect, not stable it stops relatively quickly so if the test runs for long time, it is good.
> Surface Test doesn't seem compatible with drives in a RAID 1 array, but that is
> my impression since it refers to surface scan on my "D:" array not just the individual disk.
Surface test is fully compatible with the RAID array of course, just as you wrote, yes, it tests the complete disk array.
This is not a bug/limitation of course, works completely as expected, as the RAID controller would not allow to perform surface testing on individual drives, just the combined array.
So by the hardware tests (short / extended test) yes, you can access individual drives in your case (this is not always true, some RAID controllers even do not allow this) and by the surface tests, you can diagnose/test the complete RAID array.
This way you can check how the drives work in general - and also how the completed, created array works (in terms of reliability, performance too).
> It's a 6TB array with only 16% free space at the moment and really don't want to damage the array, but I could pull the bad drive.
No need for that of course.
> Failure Predicted - Attribute: 198 Off-Line Uncorrectable Sector Count,
> SMART Info tab:
> 198, Off-Line Uncorrectable Sector Count, 116, 100, 253, Advisory: Usage limit exceeded, 000000000000, 0, Enabled
Yes I see.
Generally there is no such error (as the number is 000000000000) so the drive surely has no problems.
You may got a false alarm: which may happen when the disk controller (more precisely its driver) has a bug and may sometimes incorrectly provide status information for Hard Disk Sentinel.
In this case, it seems the "Threshold" field is incorrectly reported by the controller - which causes a false assumption that the error level threshold exceeded (which happens when the Value is lower than the Threshold) - even if the actual error counter is zero.
This is not rare when a problematic older Intel chipset RAID controller driver used. On the Information page you can verify the Disk Controller (which manages the RAID array) and its driver. If I'm correct, an Intel driver before version 11.6 used and while some of them are good, there are many driver version which have problems (like this one).
If this is true, installing the proper driver from the Support -> Driver Zone page
(
https://www.hdsentinel.com/driverzone.php )
or diretly from
https://www.hdsentinel.com/driver/stor_ ... 030_pv.zip )
will likely help.
Generally Hard Disk Sentinel has filters against such/similar invalid driver responses, but sometimes the drivers may still provide false information.
Please use Report menu -> Send test report to developer option, as then it is possible to check the actual situation, verify the driver version and response and improve the situation. Plus (especially if the controller/driver is different) from the report I can check and advise about the best to be used to improve the situation and prevent false information to be displayed.
