Compared with PCs, most DVRs designed for CCTV reasons are embedded products that require significantly less maintenance and easier setup than a PC-based Remedy, for the medium to a large number of analogue cameras. Most CCTV systems consist of difficult drives (calculated in terabytes, or TB) for community recording storage, https://johnathandeczx.blog2freedom.com/34184136/closed-circuit-cameras-an-overview