Thank you for your info. Will keep that in mind. One main issue I use SSD is that I am very sensitive to noise. The NAS will be in my bedroom. If the NAS and internal drives are noisy even they are not in use, it will drive me crazy. Are QNAP and Synology NAS silent when they are idle?
I read some users mentioning that they have issue using TM backups on the Mac with Synology and QNAP. What is the problem? For Mac, I use both CCC and TM. For Windows, I use True Image. For Linux, I just drag and drop.