Seagate SAS 3TB drives and smartctl results

[RegularJoe]

Hi All,

What are the suggested ways to identify a suspect drive with SAS? The ECC errors on one of my drives:

root@freenas[~]# smartctl -a /dev/da16
smartctl 6.6 2017-11-05 r4594 [FreeBSD 11.2-STABLE amd64] (local build)
Copyright (C) 2002-17, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Vendor: SEAGATE
Product: ST33000650SS
Revision: RS17
Compliance: SPC-4
User Capacity: 3,000,592,982,016 bytes [3.00 TB]
Logical block size: 512 bytes
Rotation Rate: 7200 rpm
Form Factor: 3.5 inches
Logical Unit id:
Serial number:
Device type: disk
Transport protocol: SAS (SPL-3)
Local Time is: Mon Dec 16 17:26:01 2019 EST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
Temperature Warning: Disabled or Not Supported

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

Current Drive Temperature: 33 C
Drive Trip Temperature: 68 C

Manufactured in week 39 of year 2012
Specified cycle count over device lifetime: 10000
Accumulated start-stop cycles: 83
Specified load-unload count over device lifetime: 300000
Accumulated load-unload cycles: 145
Elements in grown defect list: 0

Vendor (Seagate) cache information
Blocks sent to initiator = 1197471682
Blocks received from initiator = 3793084622
Blocks read from cache and sent to initiator = 4164374306
Number of read and write commands whose size <= segment size = 832951590
Number of read and write commands whose size > segment size = 28

Vendor (Seagate/Hitachi) factory information
number of hours powered up = 46541.30
number of minutes until next internal SMART test = 34

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: 2812931892 8 0 2812931900 11 1802858.103 3
write: 0 0 0 0 0 129825.893 0
verify: 2657524588 29 0 2657524617 31 560841.714 2

Non-medium error count: 12203

SMART Self-test log
Num Test Status segment LifeTime LBA_first_err [SK ASC ASQ]
Description number (hours)
# 1 Background long Completed 32 46528 - [- - -]
# 2 Background short Completed 32 46482 - [- - -]
# 3 Background short Completed 32 46361 - [- - -]
# 4 Background long Completed 32 46344 - [- - -]
# 5 Background short Completed 32 46313 - [- - -]
# 6 Background long Completed 32 46299 - [- - -]
# 7 Background short Completed 32 46288 - [- - -]
# 8 Background long Completed 32 46275 - [- - -]
# 9 Background short Completed 32 46264 - [- - -]
#10 Background long Completed 32 46248 - [- - -]
#11 Background short Completed 32 46216 - [- - -]
#12 Background short Completed 32 46192 - [- - -]
#13 Background long Completed 32 46191 - [- - -]
#14 Background short Completed 32 46168 - [- - -]
#15 Background long Completed 32 46161 - [- - -]
#16 Background short Completed 32 46144 - [- - -]
#17 Background long Completed 32 46142 - [- - -]
#18 Background short Completed 32 46119 - [- - -]
#19 Background long Completed 32 46113 - [- - -]
#20 Background short Completed 32 46095 - [- - -]

Long (extended) Self Test duration: 27600 seconds [460.0 minutes]