Bugs can be found in the firmware of drives.  The reset messages may look similar to:

Sep  8 21:25:01 server1 disk_subsystem[19374]: snlog: sn="##:##:##:##:##:##" id="DS" m="23" c="6" event="DISK_STATUS" category="HARDWARE" ip="192.0.2.1" model="R720xd" msg="Adapter 1; seqNum: 0x00055756; Time: Thu Sep  8 22:22:49 2016; Event Description: PD 1d(e0x26/s3) Path 5000c50055990f46  reset (Type 03); Device ID: 29; Enclosure Index: 38; Slot Number: 3; "

The tail end of the line indicates, in this case, slot 3.  If the slot number changes regularly, then this is a good candidate for a firmware update rather than a drive replacement.

 

The errors are caused by bugs in the firmware.

There are multiple files from the manufacturer which can be obtained from Security Analytics support.  They are:

Brand     Model                   Filename
Seagate ST32000645SS  SAS-Drive_Firmware_568C9_LN_RS16_A00.BIN
Seagate ST2000NM0001 SAS-Drive_Firmware_GXCDR_LN_PS08_A04.BIN
Seagate ST2000NM0023 SAS-Drive_Firmware_MF5DP_LN_GS13_A00.BIN
Seagate ST32000640SS SAS-Drive_Firmware_XXTFT_LN_AS0B_A08.BIN
Toshiba MG03SCA200 SAS-Drive_Firmware_0NXTP_LN_DG09_A00.BIN

Applying the firmware updates must be done after the drives are quiesced or idled.

The steps to update the Seagate drive firmware are:

1. Copy the attached file to your sensor.
2. Login as root over ssh to the sensor
3. Change the permissions of the file with  chmod u+x SAS-Drive_Firmware_*.BIN
4. Stop Security Analytics services with scotus stop
5. Run the appropriate firmware update file.

6. Monitor /var/log/messages for problems in the future by periodically running: