Practice Test Geeks(CST) Certified Surveillance Technician Practice Test
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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

  1. What does RAID stand for in the context of NVR storage?

    Answer: Redundant Array of Independent Disks

    RAID (Redundant Array of Independent Disks) combines multiple drives to provide data redundancy, performance, or both.

  2. Which RAID level provides mirroring, meaning data is written identically to two drives simultaneously?

    Answer: RAID 1

    RAID 1 mirrors data across two drives so that if one fails, the other contains an identical copy ensuring no data loss.

  3. What is the key disadvantage of RAID 0 for surveillance storage?

    Answer: It provides no redundancy — a single drive failure causes total data loss

    RAID 0 stripes data across drives for performance but has zero fault tolerance — one drive failure loses all data.

  4. RAID 5 requires a minimum of how many drives?

    Answer: 3

    RAID 5 requires at least 3 drives to distribute parity data across all drives while maintaining read/write performance.

  5. What is a hot spare drive in a RAID array used for surveillance?

    Answer: An extra drive kept powered and ready to automatically replace a failed drive

    A hot spare is an idle drive in the array that automatically begins rebuilding data when another drive fails, minimizing downtime.

  6. Which storage technology is increasingly used in surveillance NVRs because it has no moving parts and faster read speeds?

    Answer: Solid-state drive (SSD)

    SSDs offer faster read/write speeds, lower latency, and greater shock resistance compared to traditional HDDs for surveillance applications.