Thank you for your reply.
Yes, I read that bad RAM was often the culprit so I checked that after upgrading unraid and the preclear plugin. I ran the memtest for over 96hrs. I guess I can try and run it longer if nothing else seems obvious. When I download the SMART report there isn't any information beyond the specs of the drive. There is nothing listed in the SMART self-test history and the Last SMART test result reads "No self-tests logged on this disk". That is what makes me think the test is not really running. I have copied and pasted the information in the downloaded SMART report below.
smartctl 6.6 2017-11-05 r4594 [x86_64-linux-4.18.20-unRAID] (local build)
Copyright (C) 2002-17, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Seagate IronWolf
Device Model: ST10000VN0004-1ZD101
LU WWN Device Id: 5 000c50 0b2b8d6fd
Firmware Version: SC60
User Capacity: 10,000,831,348,736 bytes [10.0 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 7200 rpm
Form Factor: 3.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ACS-3 T13/2161-D revision 5
SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Thu Mar 21 08:56:45 2019 EDT
SMART support is: Available - device has SMART capability.
SMART support is: Disabled
AAM feature is: Unavailable
APM feature is: Unavailable
Rd look-ahead is: Enabled
Write cache is: Enabled
DSN feature is: Unavailable
ATA Security is: Disabled, frozen [SEC2]
Wt Cache Reorder: Enabled
SMART Disabled. Use option -s with argument 'on' to enable it.
(override with '-T permissive' option)