Does anyone know if it’s possible to self install an SVR?

Does anyone know if it’s possible to self install an SVR? My system is managed by a local company and they are saying they have to install it. It doesn’t seem like it would be too hard. Also the local company told me that it doesn’t continuously record 24/7 it only saves triggered recordings when your device is full? That doesn’t seem to be what I’m reading and the local guy doesn’t seem that techy. Thanks for the help.