SMART information on RE4 disk

Hi,
I bought recently a RE4 disk WD1003FBYX and i have multiple question about some value in SMART.

I have a spin_up_time value equal to 3633, is it normal for a two day recent disk ? Can you explain me this raw value ?

Other question about this disk running in a home NAS, so, is it recommended for the disk to run 24/24 (few power cycle count) ? or is it better to hibernate when there is no activity on the disk or between the night : two or three hibernation of the disk  in a day ?

Thanks a lot for helping me,
Best regard,
SR

The raw value is the spinup time, with units in milliseconds. In your example, the drive took 3.633 seconds to spinup. This is normal.