Preclear post read failed. Any suggestions here. I got a failure at the end of pre clear. This drive is connected via an onboard sata connector that I don't normally utilize. The WD red drive is running pretty hot as well 47-50C. log attached.
preclear_disk_log.txt
Jul 31 09:43:51 preclear_disk_VDHX6KUK_30153: Command: /usr/local/emhttp/plugins/preclear.disk/script/preclear_disk.sh --notify 3 --frequency 1 --cycles 1 --no-prompt /dev/sdb
Jul 31 09:43:51 preclear_disk_VDHX6KUK_30153: Preclear Disk Version: 1.0.16
Jul 31 09:43:52 preclear_disk_VDHX6KUK_30153: S.M.A.R.T. info type: default
Jul 31 09:43:52 preclear_disk_VDHX6KUK_30153: S.M.A.R.T. attrs type: default
Jul 31 09:43:52 preclear_disk_VDHX6KUK_30153: Disk size: 8001563222016
Jul 31 09:43:52 preclear_disk_VDHX6KUK_30153: Disk blocks: 1953506646
Jul 31 09:43:52 preclear_disk_VDHX6KUK_30153: Blocks (512 bytes): 15628053168
Jul 31 09:43:52 preclear_disk_VDHX6KUK_30153: Block size: 4096
Jul 31 09:43:52 preclear_disk_VDHX6KUK_30153: Start sector: 0
Jul 31 09:43:57 preclear_disk_VDHX6KUK_30153: Pre-Read: dd if=/dev/sdb of=/dev/null bs=2097152 skip=0 count=8001563222016 conv=notrunc,noerror iflag=nocache,count_bytes,skip_bytes
Jul 31 10:53:15 preclear_disk_VDHX6KUK_30153: Pre-Read: progress - 10% read @ 188 MB/s
Jul 31 12:03:47 preclear_disk_VDHX6KUK_30153: Pre-Read: progress - 20% read @ 181 MB/s
Jul 31 13:16:54 preclear_disk_VDHX6KUK_30153: Pre-Read: progress - 30% read @ 174 MB/s
Jul 31 14:33:20 preclear_disk_VDHX6KUK_30153: Pre-Read: progress - 40% read @ 167 MB/s
Jul 31 15:53:54 preclear_disk_VDHX6KUK_30153: Pre-Read: progress - 50% read @ 161 MB/s
Jul 31 17:19:43 preclear_disk_VDHX6KUK_30153: Pre-Read: progress - 60% read @ 146 MB/s
Jul 31 18:52:27 preclear_disk_VDHX6KUK_30153: Pre-Read: progress - 70% read @ 138 MB/s
Jul 31 20:34:15 preclear_disk_VDHX6KUK_30153: Pre-Read: progress - 80% read @ 121 MB/s
Jul 31 22:29:41 preclear_disk_VDHX6KUK_30153: Pre-Read: progress - 90% read @ 104 MB/s
Aug 01 00:45:46 preclear_disk_VDHX6KUK_30153: Pre-Read: dd - read 8001565319168 of 8001563222016.
Aug 01 00:45:47 preclear_disk_VDHX6KUK_30153: Pre-Read: elapsed time - 15:01:47
Aug 01 00:45:47 preclear_disk_VDHX6KUK_30153: Pre-Read: dd exit code - 0
Aug 01 00:45:51 preclear_disk_VDHX6KUK_30153: Zeroing: emptying the MBR.
Aug 01 00:45:51 preclear_disk_VDHX6KUK_30153: Zeroing: dd if=/dev/zero of=/dev/sdb bs=2097152 seek=2097152 count=8001561124864 conv=notrunc iflag=count_bytes,nocache,fullblock oflag=seek_bytes
Aug 01 00:45:51 preclear_disk_VDHX6KUK_30153: Zeroing: dd pid [3609]
Aug 01 02:49:23 preclear_disk_VDHX6KUK_30153: Zeroing: progress - 10% zeroed @ 111 MB/s
Aug 01 04:35:33 preclear_disk_VDHX6KUK_30153: Zeroing: progress - 20% zeroed @ 146 MB/s
Aug 01 06:13:56 preclear_disk_VDHX6KUK_30153: Zeroing: progress - 30% zeroed @ 127 MB/s
Aug 01 07:57:00 preclear_disk_VDHX6KUK_30153: Zeroing: progress - 40% zeroed @ 113 MB/s
Aug 01 09:56:06 preclear_disk_VDHX6KUK_30153: Zeroing: progress - 50% zeroed @ 110 MB/s
Aug 01 11:51:07 preclear_disk_VDHX6KUK_30153: Zeroing: progress - 60% zeroed @ 117 MB/s
Aug 01 13:41:27 preclear_disk_VDHX6KUK_30153: Zeroing: progress - 70% zeroed @ 130 MB/s
Aug 01 15:19:57 preclear_disk_VDHX6KUK_30153: Zeroing: progress - 80% zeroed @ 136 MB/s
Aug 01 17:07:26 preclear_disk_VDHX6KUK_30153: Zeroing: progress - 90% zeroed @ 113 MB/s
Aug 01 19:13:15 preclear_disk_VDHX6KUK_30153: Zeroing: dd - wrote 8001563222016 of 8001563222016.
Aug 01 19:13:16 preclear_disk_VDHX6KUK_30153: Zeroing: elapsed time - 18:27:23
Aug 01 19:13:17 preclear_disk_VDHX6KUK_30153: Zeroing: dd exit code - 0
Aug 01 19:13:18 preclear_disk_VDHX6KUK_30153: Writing signature: 0 0 2 0 0 255 255 255 1 0 0 0 255 255 255 255
Aug 01 19:13:22 preclear_disk_VDHX6KUK_30153: Post-Read: verifying the beggining of the disk.
Aug 01 19:13:22 preclear_disk_VDHX6KUK_30153: Post-Read: cmp /tmp/.preclear/sdb/fifo /dev/zero
Aug 01 19:13:22 preclear_disk_VDHX6KUK_30153: Post-Read: dd if=/dev/sdb of=/tmp/.preclear/sdb/fifo count=2096640 skip=512 conv=notrunc iflag=nocache,count_bytes,skip_bytes
Aug 01 19:13:23 preclear_disk_VDHX6KUK_30153: Post-Read: verifying the rest of the disk.
Aug 01 19:13:23 preclear_disk_VDHX6KUK_30153: Post-Read: cmp /tmp/.preclear/sdb/fifo /dev/zero
Aug 01 19:13:23 preclear_disk_VDHX6KUK_30153: Post-Read: dd if=/dev/sdb of=/tmp/.preclear/sdb/fifo bs=2097152 skip=2097152 count=8001561124864 conv=notrunc iflag=nocache,count_bytes,skip_bytes
Aug 01 20:34:20 preclear_disk_VDHX6KUK_30153: Post-Read: progress - 10% verified @ 169 MB/s
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: dd - read 1527356166144 of 8001563222016.
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: elapsed time - 2:33:21
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: dd command failed, exit code [1].
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 1518178664448 bytes (1.5 TB, 1.4 TiB) copied, 9128.02 s, 166 MB/s
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 725089+0 records in
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 725088+0 records out
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 1520619749376 bytes (1.5 TB, 1.4 TiB) copied, 9142.07 s, 166 MB/s
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 726061+0 records in
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 726060+0 records out
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 1522658181120 bytes (1.5 TB, 1.4 TiB) copied, 9154.33 s, 166 MB/s
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 727177+0 records in
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 727176+0 records out
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 1524998602752 bytes (1.5 TB, 1.4 TiB) copied, 9168.43 s, 166 MB/s
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 728256+0 records in
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 728255+0 records out
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 1527261429760 bytes (1.5 TB, 1.4 TiB) copied, 9182.28 s, 166 MB/s
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: dd: error reading '/dev/sdb': Input/output error
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 728299+1 records in
Aug 01 21:46:45 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 728299+1 records out
Aug 01 21:46:46 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 1527354068992 bytes (1.5 TB, 1.4 TiB) copied, 9198.16 s, 166 MB/s
Aug 01 21:46:46 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 728299+1 records in
Aug 01 21:46:46 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 728299+1 records out
Aug 01 21:46:46 preclear_disk_VDHX6KUK_30153: Post-Read: dd output: 1527354068992 bytes (1.5 TB, 1.4 TiB) copied, 9198.16 s, 166 MB/s
Aug 01 21:46:48 preclear_disk_VDHX6KUK_30153: ssmtp: Authorization failed (535 5.7.0 (#AUTH005) Too many bad auth attempts.)
Aug 01 21:46:49 preclear_disk_VDHX6KUK_30153: S.M.A.R.T.: 5 Reallocated_Sector_Ct 6
Aug 01 21:46:49 preclear_disk_VDHX6KUK_30153: S.M.A.R.T.: 9 Power_On_Hours 77
Aug 01 21:46:49 preclear_disk_VDHX6KUK_30153: S.M.A.R.T.: 194 Temperature_Celsius 50
Aug 01 21:46:49 preclear_disk_VDHX6KUK_30153: S.M.A.R.T.: 196 Reallocated_Event_Count 6
Aug 01 21:46:49 preclear_disk_VDHX6KUK_30153: S.M.A.R.T.: 197 Current_Pending_Sector 16
Aug 01 21:46:49 preclear_disk_VDHX6KUK_30153: S.M.A.R.T.: 198 Offline_Uncorrectable 0
Aug 01 21:46:49 preclear_disk_VDHX6KUK_30153: S.M.A.R.T.: 199 UDMA_CRC_Error_Count 0
Aug 01 21:46:49 preclear_disk_VDHX6KUK_30153: error encountered, exiting...