Power over Ethernet (PoE) is an access layer technology that combines data signals and electrical power into a single Ethernet cable connection to enable remote powered device. PoE switches provide PoE power and network connectivity over twisted-pair wire to access points, surveillance cameras, and other IoT devices. It runs over twisted pair cabling which can be quickly installed, often in difficult to reach locations where pulling electrical power is not feasible.

NVR records security video surveillance footage in digital format to a hard drive. Because the NVR does not have video capture capability, video is typically processed and encoded from the surveillance IP or CCTV camera and transferred to the NVR for storage via ethernet or WiFi network. NVRs are typically employed within IP video surveillance systems. footage in digital format to a hard drive. footage in digital format to a hard drive.

Traditional servers handle applications, databases, or networking, while storage servers focus on storing and managing data. They often use scalable architectures, advanced file systems, and RAID for redundancy. Data storage servers provide high-capacity, fault-tolerant, and networked solutions tailored for enterprises, ensuring seamless access and backup functionality for mission-critical data workloads.

A hard disk is comprised of four basic parts: platters, a spindle, read/write heads, and integrated electronics. Platters are rigid disks made of metal or plastic. Both sides of each platter are covered with a thin layer of iron oxide or other magnetizable material. The platters are mounted on a central axle or spindle, which rotates all the platters at the same speed. Read/write heads are mounted on arms that extend over both top and bottom surfaces of each disk.