Why the HDD status shows high temperature warning?

[Description]

Why the HDD status shows high temperature warning? 

[Root Cause]

1. The ambient's issue
2. Fans do not work
3. Hard drive has bad sectors

[Solution]

1. Please follow below steps to solve the temperature issue:

Steps 1: Shut down the NVR.

Steps 2: Open the case of the unit then clean the dust.

Steps 3: Follow below recommended values to adjust the air condition. 

• Surrounding: (refer to Wiki)
  • Temperature: 18-27°C (64-80°F)
  • Humidity: 40%-60% rH
• CPU: 45-50 °C 
• HDD: 5-50°C (refer to Seagate website)

Steps 4: Check the CPU and HDD temperature on NVR's web.

2. Please disable the fan speed on "System>System Settings>Smart Fan (in Crystal it named "Fan Control")".

• Enable: System will detect the temperature and adjust the fan rpm. 
• Disable: System will request fan running as the maximum speed of rotation.

3. Please refer to this Wiki How to check the HDD health?