Best answer: No, the DS419slim is not intended for 4K movie playback. If you need to transcode 4K movies to the same resolution or lower, you’ll encounter buffering issues since the low-powered CPU and 512MB RAM attempt to keep up with the intense system workload. You’ll need a more expensive NAS.
- Better NAS for 4K: Synology DS1019+ ($640 at Amazon)
- Compact NAS: Synology DS419slim ($330 at Amazon)
Not designed for Plex
The DS419slim is a niche NAS and isn’t designed to handle a suite like Plex Media Server. For starters, you’ve only got 512MB of RAM. That’s nowhere near enough to run Plex comfortably. Then you have the low-powered CPU, which is great for general file storage and some other tasks, but you won’t get far when playing media, especially at 4K.
You won’t be able to replace the Marvell Armada 385 88F6820 CPU, nor will you be able to upgrade the small amount of available system memory. The DS419slim just wasn’t designed for 4K playback. Where this NAS really shines is in the portable NAS segment, allowing you to store all your files on solid-state drive (SSD) storage inside a chassis that weighs just 1.5 pounds (0.66kg)
Via:: Windows Central