Can a DVR record network cameras?

Not on its own. A DVR is for coax cameras; network (IP) cameras need an NVR. Some hybrid recorders take both.

How do I pick the channel count?

Count the cameras you have now and add the ones you may want. Recorders come in 4, 8, 16 and 32 channels.

CCTV DVR Recorders: Replace and Match

Item	Type	Availability	Price	Basket
Hikvision iDS-7216HUHI-M2/XT 16-Channel 8MP 1U H.265 AcuSense DVR for HDTVI, AHD and CVIPart no. iDS-7216HUHI-M2/XT16CHAvailable	16CH	Available	£420.42

Choosing a replacement DVR

A DVR records from analogue and HD-TVI cameras that run on coax cable with BNC plugs. If your old recorder has failed or been discontinued, a DVR with the same number of channels and a matching camera standard is the simplest swap, because the cameras and cabling stay where they are.

Pick by channel count

Count the cameras connected to the old recorder, then choose the same number of channels or the next size up so there is room to add one later.

4 channel DVRs for small systems with up to four cameras.
8 channel DVRs for the common eight-camera layout.
16 channel DVRs for larger sites.
32 channel DVRs where sixteen is not enough.

Replacing an old recorder

Before you order, write down these details from the old unit and its cameras:

The model number printed on the label, so you can compare it with the replacement.
The camera type, found in the camera's own specification or on its label.
The connector at the back of the recorder. Coax with BNC plugs points to a DVR; a network cable points to an NVR instead.
The size of the hard drive fitted, so footage capacity does not shrink.

Some DVRs in the range, marked PoC, can power compatible cameras down the same coax cable, which suits systems that had no separate power leads.

Replacing a Swann recorder in particular? Read our guide to Swann DVR replacement. To compare every recorder type, see all CCTV recorders.