Ever since I’ve got my Synology NAS device I kept it on my desk. I wasn’t bothered at first but after some time the buzzing sound that it created got my attention. First I checked the device and the removable parts. Interestingly there is no rubber to help fighting with vibration in Synology design. The hard plastic drive sleds are directly sitting on metal cage, creating the perfect room for it. I had to do something, prevent the vibration causing this annoying noise and eating up my drives’ lifetime.
After a short investigation in Google, I saw that I wasn’t the only one complaining. User Chipware in reddit forum, explained that he solved his problem with only some velcro. I bought some self-adhesive velcro (approx. 5 cm per drive is sufficient) and applied it to the sleds where they touch the cage, like he did. (click on the photo to enlarge)
Result: A significant decrease in the noise. After I put some anti-static foam under the feet, I could not feel any vibration from the desk anymore. I can only hear the disk head movements and a relatively quiet fan now. I am glad that I took care of this before it created any bad sectors. Strongly suggested.
Fair warning: Although this is perfectly safe, I am not responsible for any damage that you may cause to your device.