1.Installation case
- The user wants to back up video footage using a USB memory.
2. Symptom
- Video backup attempted with USB memory, but failed with an error message that it requires spare space of twice larger size of the prepared USB memory
- Example: 150GB required for video back up
- 1st try : Tried back up with USB 32GB →Error message ’64GB required’
- 2nd try : Tried back up with USB 64GB→Error message ‘128GB required’
- 3rd try : Tried back up with USB 128GB →Error message ‘150GB required’ (Correct amount appears)
3. Cause
- It is designed to stop calculating backup capacity if the amount of space to back up exceeds
200% of the free space of USB memory
- While performing large-sized video back up, the system takes time from minutes to hours to calculate the needed space and the system gets burden to operate other functions.
- In order to secure the system for normal function and prevent from operation burden, If space for back up is needed more than twice size of prepared USB memory, it is designed to stop the calculation when the calculation exceeds twice its USB memory.
4. Measures(Troubleshooting Guide)
- When performing video back up with USB memory, prepare USB memory with large enough space.
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