The 2-bay NAS makes sense if you want to process original data with a mirrored disk in a raid group directly on the disk station.
The mirrored disk then protects you against a disk crash, as in the raid network you automatically always have duplicates of all data on the disk station.
If the main purpose is a media server, a 2-bay NAS only brings higher costs, more noise, more energy consumption and more space requirements, but apart from the fact that you can use even more storage (if you dismantle the RAID network), there is actually no additional benefit.
In order to additionally secure the videos on the NAS, which are then automatically only saved on one hard disk and not automatically mirrored twice in parallel on two hard disks, you can still drag a copy of them to an HDD connected via USB.
Personally, I have very good experience with a DS116, which I have been using as a PLEX server with 4TB WD-Red storage for a long time.
The DS116 has a lot of power and is very suitable for video streaming, even demo UHD videos with bit rates of 90 MBit/sec are transferred smoothly to the Smart TV using the PLEX server via LAN cable.
Unfortunately, the DS116 is already pretty much sold out (at the moment I have only found a few offers with 8TB WD-Red storage online) and the direct successor, the DS118, is not suitable for PLEX until further notice because the new processor is not compatible There will be no PLEX package for this in the foreseeable future.
If you want to tackle the topic now, I see 2 options for you:
- You take the DS115j with 4TB for only CHF 241 as an entry-level model and consider the whole thing a real bargain
- You grab one of the few available, much more powerful DS116 with 8TB for CHF 469
I’ve had the DS116 for almost 2 years now and I’ve never reached a performance limit with it.
For me this is a great device that surprised me very positively. The read/write performance in the connection to the PCs in the LAN is also close to the gigabit LAN speed. When making backups from the PC, the DS116 normally shovels around 110 - 115 MegaBytes/sec. and this is very consistent over a long period of time.
As a more modest Sparvariante, the DS115j would definitely fulfill your primary purpose, perhaps just much closer to the performance limit.
And as an addendum: I had two PLEX servers in my network in parallel for a while, one on a high-end Windows i7 PC and the other on the DS116. After a few weeks I uninstalled the Windows server because the PLEX server on the DS116 was absolutely on par (apart from the lack of transcoding option) and I therefore no longer saw any point in running two Plex servers in parallel.
Hobby-Nerd ohne wirtschaftliche Abhängigkeiten zur Swisscom