root@freenas[~]# smartctl -x /dev/da6
smartctl 7.0 2018-12-30 r4883 [FreeBSD 11.3-RELEASE-p7 amd64] (local build)
Copyright (C) 2002-18, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Vendor:               HGST
Product:              HUH721010AL4204
Revision:             C322
Compliance:           SPC-4
User Capacity:        10,000,831,348,736 bytes [10.0 TB]
Logical block size:   4096 bytes
LU is fully provisioned
Rotation Rate:        7200 rpm
Form Factor:          3.5 inches
Logical Unit id:      0x5000cca2510cb12c
Serial number:        7PG6ZBZR
Device type:          disk
Transport protocol:   SAS (SPL-3)
Local Time is:        Wed Jun 17 21:48:35 2020 EDT
SMART support is:     Available - device has SMART capability.
SMART support is:     Enabled
Temperature Warning:  Enabled
Read Cache is:        Enabled
Writeback Cache is:   Enabled

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

Grown defects during certification <not available>
Total blocks reassigned during format <not available>
Total new blocks reassigned <not available>
Power on minutes since format <not available>
Current Drive Temperature:     32 C
Drive Trip Temperature:        85 C

Manufactured in week 32 of year 2016
Specified cycle count over device lifetime:  50000
Accumulated start-stop cycles:  274
Specified load-unload count over device lifetime:  600000
Accumulated load-unload cycles:  1393
Elements in grown defect list: 0

Vendor (Seagate Cache) information
  Blocks sent to initiator = 23422111955550208

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:          0       76         0        76     549467      26029.560           0
write:         0        0         0         0     607964      90152.550           0
verify:        0        0         0         0      19359          0.000           0

Non-medium error count:        0

SMART Self-test log
Num  Test              Status                 segment  LifeTime  LBA_first_err [SK ASC ASQ]
     Description                              number   (hours)
# 1  Background long   Failed in segment -->       3   28702                 - [0x1 0x5d 0xfd]
# 2  Background short  Failed in segment -->       3   28692                 - [0x1 0x5d 0xfd]
# 3  Background long   Completed                   -   28520                 - [-   -    -]
# 4  Background short  Completed                   -   28284                 - [-   -    -]
# 5  Background long   Completed                   -   28112                 - [-   -    -]
# 6  Background short  Completed                   -   27948                 - [-   -    -]
# 7  Background long   Completed                   -   27776                 - [-   -    -]
# 8  Background short  Completed                   -   27564                 - [-   -    -]
# 9  Background long   Completed                   -   27398                 - [-   -    -]
#10  Background long   Completed                   -   27245                 - [-   -    -]
#11  Background short  Completed                   -   27227                 - [-   -    -]

Long (extended) Self-test duration: 65535 seconds [1092.2 minutes]

Background scan results log
  Status: halted - vendor specific cause
    Accumulated power on time, hours:minutes 28834:48 [1730088 minutes]
    Number of background scans performed: 175,  scan progress: 0.00%
    Number of background medium scans performed: 175

Protocol Specific port log page for SAS SSP
relative target port id = 1
  generation code = 14
  number of phys = 1
  phy identifier = 0
    attached device type: SAS or SATA device
    attached reason: unknown
    reason: unknown
    negotiated logical link rate: phy enabled; 6 Gbps
    attached initiator port: ssp=1 stp=1 smp=1
    attached target port: ssp=0 stp=0 smp=0
    SAS address = 0x5000cca2510cb12d
    attached SAS address = 0x500605b007ba5f42
    attached phy identifier = 3
    Invalid DWORD count = 32
    Running disparity error count = 0
    Loss of DWORD synchronization = 8
    Phy reset problem = 0
    Phy event descriptors:
     Invalid word count: 32
     Running disparity error count: 0
     Loss of dword synchronization count: 8
     Phy reset problem count: 0
relative target port id = 2
  generation code = 14
  number of phys = 1
  phy identifier = 1
    attached device type: no device attached
    attached reason: unknown
    reason: power on
    negotiated logical link rate: phy enabled; unknown
    attached initiator port: ssp=0 stp=0 smp=0
    attached target port: ssp=0 stp=0 smp=0
    SAS address = 0x5000cca2510cb12e
    attached SAS address = 0x0
    attached phy identifier = 0
    Invalid DWORD count = 0
    Running disparity error count = 0
    Loss of DWORD synchronization = 0
    Phy reset problem = 0
    Phy event descriptors:
     Invalid word count: 0
     Running disparity error count: 0
     Loss of dword synchronization count: 0
     Phy reset problem count: 0