CST Storage & Retention Management Flashcards
6 cards from real CST practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CST Storage & Retention Management flashcards as text
What does DVR stand for in a surveillance system?
Answer: Digital Video Recorder
A DVR (Digital Video Recorder) captures and stores video from analog cameras by digitizing the signal internally.
What is the primary advantage of an NVR over a DVR for modern surveillance installations?
Answer: NVRs process video data from IP cameras directly over the network
An NVR receives already-encoded digital video streams from IP cameras over the network, eliminating the need for analog encoding hardware.
Which factor has the GREATEST impact on the storage capacity required for a surveillance system?
Answer: The resolution, frame rate, and compression codec used
Higher resolution, higher frame rates, and less efficient codecs all increase the storage space consumed per hour of recorded video.
What is the purpose of motion-triggered recording in a surveillance storage strategy?
Answer: To reduce storage usage by only recording when activity is detected
Motion-triggered recording conserves storage by only writing video to disk when motion is detected rather than recording continuously.
In surveillance storage planning, what does 'retention period' refer to?
Answer: The length of time recorded footage is kept before being overwritten or deleted
Retention period defines how long video footage is stored before the system automatically overwrites or purges it.
A surveillance system is configured for continuous recording at 1080p/15fps. What is the BEST approach to extend the retention period without adding storage hardware?
Answer: Switch to a more efficient codec such as H.265
H.265 (HEVC) provides approximately 50% better compression than H.264 at equivalent quality, effectively doubling storage efficiency.