NAS and ip surveillance

[zjor2000 0]

hi

i've 4 ip camera's ,analog dvr,Seagate Nas storage 

my dvr doesn't have the ip search option in it only cams with coaxial are able to be connected 

how can i benefit from all of the other ip cameras and save videos on the Nas without having my pc to be turned on all time !!!

 

thanks