The amount of video footage that CCTV systems can store depends upon certain factors. These factors include the resolution at which the cameras are recording the video, and also how many cameras are recording. In other words, if it is a single camera or multiple cameras and DVR system. Nowadays, all the latest technology ensures that most of the CCTV cameras come with inbuilt SD card storage compatibility. Depending upon the memory limit of the CCTV, you can insert SD cards of various capacities such as 32GB, 64GB, 128GB and so on. Note that comprehensive surveillance systems that come with DVR storage facility have memory storage capacity up to 1TB hard disk storage. Additionally, some of the CCTV camera systems record the CCTV footage straight into a hard drive. You may place this hard drive at your property or on a server somewhere else or even in the cloud. However, it all depends upon the exact system and circumstance. Generally, you will get the recording of about a month if you're using it in a domestic setting and are recording it to your own hard drive. If you are recording it to an offsite server or to the cloud then it really depends upon the storage that you have.