QNAP TS-453D comes with only 4GB of RAM, and if you are going to do RAM intensive tasks like using Containers or Virtual Machines, you will definitely need to upgrade the RAM.
My second NAS 10 years ago was a decision between Synology NAS and QNAP NAS. In the end, I chose Synology. I can’t remember the reason why. Throughout all these years, I have been sticking with Synology NAS.
I purchased my D-Link DNS-323 on the 1st September 2008 during Comex 2008.
3 days ago, my DNS-323 decided to give up on me, just after 1 year and 3 months! The warranty for the DNS-323 is only 1 year so my warranty had just ended! Argh!