I have a Synology DS1019+ populated with 5x 4tb WD Red Pro drives configured as RAID6. The NAS is used solely for PC backup.
The Synology unit has a cheap construction with very cheap fans which makes significantly more noise that both of my office computers, plus of course the drive noise. Backups are run between 18:00 & 20:00 every day & due to the noise of the unit, I use the NAS power management to turn on the NAS at 18:00, then turn off at 22:00 every day.
Would the daily spin up & spin down of the WD Red Pro drives damage them more than leaving them on 24/7 in some way?