02-15-2021, 03:38 PM
Yes, TS-251D is more innovative NAS and features the latest technology features. But bot of them will perform very similar. You can stream 4K locally and also remotely via Qnap Video Station app. You can also upgrade both boxes with SSD cache card. If you do not plan on upgrading to 10GbE, then a 251B will be a cheaper option.I hope this helps.