I've also purchased 4 Seagate Exos 14TB, setting them as SHR2. In the future I will add 4 extra disks. I know that I've lost half of the disks capacity but I need the extra redundancy (saftety) over the storage space.
Well that's a whole lot of space!
I have what some might consider an odd suggestion born of personal experience: Since you have the space in this rig, add a drive. Here's why:
- with 4-drives and SHR-2, you can lose 2-drives and still run, but you have no protection in case another drive goes out before a new set shows up;
- with 5-drives and SHR-2, you can lose 2-drives and still have SHR-1; and
- you spread out the wear a bit.
Understand, this comes from
my own experience and is not necessarily endorsed by
anybody. I installed four new drives in a 4-drive system, all bought at the same time, all the same model and size, and they died — all of them — in less than 90-days. I was very grateful for Synology's work on DSM and SHR-2 as when they failed, they did so one-at-a-time and the NAS dropped 2 out using SHR-2 but the failure was such that it was able to keep going until I started replacing the drives.
Oh I almost forgot, the budget allocated in the end was 2100 euros for the NAS+the disks. I've exceed the initial predictions.
Yeah, that seems to happen a lot.
I still have 4x3tb disks. Do you think is worth putting them inside the new nas or it makes no sense in terms of performance/space?
Not really, no. The 3TB disks generally, from all makers, had issues and you've got a ton of storage already. Also those old 3TB disks are probably not on the "compatibility" list.
