You'll need to have a strong wireless network in place because these can't be hardwired. Yes, you can record to a hard disk using softwares like iSpy and BlueIris. The camera app says that you can't do both network recording and SD card recording at the same time.
Don't know about your camera model and app, but
I am using C200 and C310, video can be recorded on both network and microSD card simultaneously.
Once micro SD card is installed, by default camera will record on microSD card. If we access this cam using iris or ispy we can save videos on pc or laptop too.
even if we delete videos from network location it stays on micro SD card unless card is formatted from mobile tapo app.
Thanks guys. Got a wired setup. good guys. came at 11am on a Sunday and work was done by 6pm. Eight cameras.
Congrats, good choice.
Dedicated wired setup is always better than wireless, though wireless is almost identical and stable like wired.