Hikvision recording devices are devices that store images from camera systems and offer playback and remote viewing. There are DVR models for those working with analog systems and NVR models for those working with IP systems. With H.265 / H.265+ compression technology, it optimizes disk usage and offers advanced functions such as smart search, alarm, multi-channel management.

• Recording type: DVR (HD-TVI / AHD / CVI / CVBS + IP hybrid) or NVR (IP camera system)

• Number of channels: variants such as 4 / 8 / 16 / 32 / 64 channels

• Supported resolution: 4 MP, 5 MP, 8 MP, 12 MP, 4K UHD

• Video compression: H.265+, H.265, H.264+, H.264

• Incoming bandwidth (ingress bandwidth): depends on device capacity (e.g. high values like 320 Mbps)

• Recording speed capacity:
   • For example, 1080p recording and playback combinations on a 16-channel device
   • Ability to support 4K / 5 MP channels in 4-channel model

• Video output: HDMI (4K / 1080p), VGA

• Audio: 1–8 channel audio input / output (depending on model)

• Network connection: RJ45 Ethernet (10/100 / 10/100/1000 Mbps)

• Storage:
   • SATA slots (1, 2, 4, 8 pieces)
   • Maximum supported capacity per SATA port (e.g. 10 TB / port)
   • RAID support: 0 / 1 / 5 / 6 / 10 (in some large NVR models)

• USB ports: 2–4 (USB 2.0 / USB 3.0)

• Alarm input / output: Model based (e.g. 16 input / 8 output)

• Power supply: 100–240 VAC input, device power consumption + disk load

• Operating temperature: −10 °C … +55 °C

• Humidity tolerance: 10% – 90% (non-condensing)

• Dimensions: E.g. 1U / desktop / rack type

• Weight: 1–8 kg depending on model

• Key features:
   • Smart search (IVS, event detection)
   • Simultaneous playback / recording
   • Recording priority, bandwidth management
   • ONVIF compliance
   • Failover / backup link support (in large models)