I concur with everything you said. He setup 10TB IronWolf drives. My 5400s (backups) are WD Reds. My live array is Red Pro / HGST Deskstar NAS. (same drive now since the HGST acquisition by WD)
FWIW, and your mileage will vary, I have 8 year old WD’s here which are still running. I have daily “throw around” drives which are constantly being used in different systems. They get rough handling compared to those in the NAS. They’re five years old and fine.
For now I will have enough with 4 TB but 8 TB would be a good start.
Which drive should I go for ? Seems like I will go for the 918+ unless they sell out the 1019+
Ofc I want it as quiet as possible (most important when it’s just on but I dont stream) from the little I have heard is the ironwolf great but from you guys they dont seems to be the best ?
I use 8TB Seagate IronWolfs in my main NAS and a mix of WD RED and Seagate IronWolf 6BT in my backup. The mix is less than ideal, especially since it mixed 7200 and 5900 RPM drives, but I am just using what I already owned, and it works surprisingly well for me. I swapped over to the Ironwolfs for higher performance and lower costs. I have not seen either to be more reliable so far …
the extra slot on the 1019+ is significant, and the stock 8GB saves you hassle. If you were going to add RAM to a 918+ I would consider it. with RAID you have lost capacity, and it is a better ratio the more slots you have. Also more slots is more performance.
Honestly, the WD Red drives I am running (5400 rpm) have been more than sufficient for my needs. (3-4 streams max. Not for lack of ability from the drives/Synology, I just only share with a select few )
Also agree with @chenks, any unmanaged gigabit switch will work fine. I use the Trendnet desktop switches because they work and clean up nice on a desktop since all ports (including power) are on the back: TRENDnet 8-Port Gigabit Switch
Do you ever have enough performance?
5900 is quieter, burns less power, thus less heat. And can transfer less MB/sec and do less operations per second. Is it needed? Almost never. Will you notice it? you will notice it only when your disks are busy doing muiltiple tasks.
Not necessarily true. Synology Hybrid RAID 1 can be configured with a single drive. Once the second drive is added later on you would get your redundancy.