>>24904287
For backups it doesn't matter much, the HDD will only be running when I'm bothered to make backups.
I do have internal HDDs in my PC as well though, but I have switched them all to 5400rpm WD Reds because they are noticeably quieter than 7200rpm HDDs and quieter than a WD Green I used to have at some point. The spinning sound doesn't really bother me anyway, but frequent seeking noises can be annoying.
SSD only storage would be nice, but it's still significantly more expensive than HDD storage and I'm not garch enough to use only SSDs.