Disk Read Errors but SMART Shows Healthy?

[kpieckiel]

Greetings!

I'm trying to determine if I need to replace a hard drive. My knee-jerk reaction is 'yes', but your advice would be appreciated.

I have a a warning on one of my pools, and it appears that one of my drives in that pool has some read errors.

I checked the SMART status, and the drive reports that it's healthy...

Code:

=== START OF READ SMART DATA SECTION ===
SMART Health Status: OK

...despite the error log showing some errors.

Code:

Error counter log:
           Errors Corrected by           Total   Correction     Gigabytes    Total
               ECC          rereads/    errors   algorithm      processed    uncorrected
           fast | delayed   rewrites  corrected  invocations   [10^9 bytes]  errors
read:   3028206483      234         0  3028206717        239      94456.174           5
write:         0        0         0         0          0      15022.415           0

Non-medium error count:        4

So is my drive failing, or is this transient? Here is the drive information.

Code:

=== START OF INFORMATION SECTION ===
Vendor:               SEAGATE
Product:              ST4000NM0023
Revision:             0004
Compliance:           SPC-4
User Capacity:        4,000,787,030,016 bytes [4.00 TB]
Logical block size:   512 bytes
LU is fully provisioned
Rotation Rate:        7200 rpm
Form Factor:          3.5 inches
Logical Unit id:      0x5000c5008f5ca9a7
Serial number:        <redacted>
Device type:          disk
Transport protocol:   SAS (SPL-3)
Local Time is:        Fri Nov 27 05:08:01 2020 EST
SMART support is:     Available - device has SMART capability.
SMART support is:     Enabled
Temperature Warning:  Enabled

Thank you for your guidance,
Kevin

 

[kpieckiel]

Yeah, nevermind. The disk faulted this morning. Definitely gonna replace it as soon as I can.

 

[joeschmuck]

While I know you will be replacing the drive now due to failure, in the future you should look and post the output of the entire SMART output (see link in my signature). Some errors are electrical connections and others are actual hard drive failures. Never use the SMART Health Status OK indicator, it will give you a false feeling that all is okay when your drive is actually telling you it is failing.

Good Luck

 

[kpieckiel]

While I know you will be replacing the drive now due to failure, in the future you should look and post the output of the entire SMART output (see link in my signature). Some errors are electrical connections and others are actual hard drive failures. Never use the SMART Health Status OK indicator, it will give you a false feeling that all is okay when your drive is actually telling you it is failing.

Good Luck

Many thanks! That's some good info you pointed out. I appreciate your reply.