Drive 7 on RS3617xs+ is severely damaged and has failed. <a class="link-font" href="https://kb.synology.com/DSM/tutorial/How_to_back_up_your_Synology_NAS" target="_blank">Back up your data immediately</a> and then replace the drive.<br><br>

Drive information<br>
Brand: Seagate<br>
Model: ST8000NM017B-2TJ103<br>
Capacity: 7.3 TB<br>
Serial number: WWZ2BL14<br>
Firmware: SN01<br><br>

S.M.A.R.T. Status:  <font color="red">Failing</font><br>Drive reconnection count:  0<br>Drive re-identification count:  0<br>

<br>Sign in to store2 (if not already) for more information.<br><br>

From store2