PoE IP camera and Freenas software recommendations for security cameras around the house Hi all,

My parents are getting older and I want to install a security camera system in their house to help keep them safe.  I have a freenas box in their house currently functioning as a fileserver with 3 x 3TB WD red drives and two 120GB SSDs.   my questions are as follows:

1) any particular camera brands people recommend that play well with freenas?  would like to have the ability to automatically overwrite earlier video after 7 days... only record when motion is detected.. and maybe have a motion/light triggering system to scare away people at night.

2) is there a security cam management software that can be installed on freenas?  i heard something about zoneminder and motioneye, but instructions on installation and compatibility did not seem too clear after googling. 

any help appreciated, thanks!