The number of bad sectors has increased on Drive 3 of RS2416RP+. We
recommend running an extended S.M.A.R.T. test on this drive and replacing
it when necessary.
<https://kb.synology.com/DSM/tutorial/How_to_diagnose_drives_health_status_when_receiving_bad_sector_warning>
Drives with bad sectors are more likely to be damaged than those without
bad sectors.

Drive information
Brand: WDC
Model: WD4002FYYZ-01B7CB0
Capacity: 3.6 TB
Serial number: K4J2HH1B
Firmware: 01.01M02

Bad sector count: 52

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