Is there any effect on the router when a large amount of traffic is transmitted on the LAN 24 hours a day constantly?
1, there is no effect on the router. The state of use of the router does not limit the traffic of its hardware, just some reaction to your data transfer speed.
2, the hard disk definitely has an impact. Mainly in terms of life expectancy. Long-term large data read and write and general conditions of use, there may be some significant differences.