Red Nas Drive Use Full Space

Hi I have several WD Red NAS drives. Is it safe to fill these drives to 100%, or should I say only fill to 85%/90%. If so if having 10% unallocated space a good idea?

Hello,

It is recommended to fill the hard drive to 85-90% as the Hard Drive that’s too full can slow down your computer and may result in crashing the system.