What problems will I face if I connect two NAS to Mikrotik CRS328-24P-4S+RM?

Question

Mikrotik

On the Internet, I came across problems with connecting the NAS to Mikrotiks. Allegedly cuts speed. I am going to purchase a Mikrotik CRS328-24P-4S+RM for an organization and organize a backup that will be performed every day according to a schedule. I'm afraid that this model will have some pitfalls. Or I'm wrong?

It is planned to implement a network in the organization. Iron in general 40-50. I plan to connect most of them via wifi. I looked at the Ubiquiti UniFi AP Lite UAP-AC-LITE access point (5 points included). I want to take 2-3 such points. Since the building is large, two floors. I want to plug these points into Mikrotik CRS328-24P-4S+RM.

Why did you choose this Mikrotik model? Because this is a Mikrotik and there is PoE for distributing power to these points. Other models did not find a similar function except for PoE in, or the prices are high.

I also plan to raise a local server for services (1c database, etc.), a file server for data exchange between employees. Or run on a local server, something like the OwnCloud cloud, so as not to raise a file server. And plug two NAS into Mikrotik to backup 5 pieces of iron. Backups will be on schedule (it will be possible at different times so as not to load the network).

The Internet provider will go through the router to Mikrotik.