TechKnowSurge
CompTIA Security+ 3.4
TechKnowSurge Catalog Interactives Which Data Redundancy Method?
InteractiveSecurityFree

Which Data Redundancy Method?

RAID, replication, backup, journaling or versioning? Sort each card by the method it describes or calls for.

⚑ Complete this interactive to capture a CTF flag worth 5 points.

About this interactive

The lesson's comparison table: RAID duplicates data across local disks. It guards against hardware failure, specifically disk failure. Replication copies data from one site to another and keeps it current, databases above all, but also files, folders, shares and directory services. It does not help when the data itself is corrupted, because the corruption is copied too. Backup keeps a copy from a point in time, so data can be restored when every live copy is corrupted. Journaling is built into file systems and databases: they keep track of changes so they can be backed out. Versioning sits on the user's front end, like Google Docs' history or code releases, so a user can go back to an earlier version. Journaling and versioning are the closest pair; the difference is whether it is baked into the system or offered to the user.

What you'll learn

Aligned to

CompTIA Security+
3.4 Explain the importance of resilience and recovery in security architecture.

Key terms

Redundant Array of Independent Disks
RAID
A data storage technology that combines multiple physical drives into a logical unit to improve performance, provide redundancy, or both, depending on the RAID level chosen. Common levels include RAID 0 (striping for speed), RAID 1 (mirroring for redundancy), and RAID 5 (striping with parity).
Replication
The process of copying and continuously synchronizing data from one location to another to ensure availability and fault tolerance in the event of a failure.
Backup
A copy of data captured at a specific point in time and stored separately from the source system, used to restore information in the event of data loss, corruption, or a security incident such as ransomware.
Journaling
The process of recording file system or database transactions so that changes can be tracked, undone, or used to restore a previous state after corruption or failure.
Versioning
A storage feature that tracks incremental changes to a file over time, recording each revision so that prior versions can be viewed or restored without maintaining separate full copies.

Topics

Interactive Categorize

About TechKnowSurge

TechKnowSurge builds IT and cybersecurity professionals through hands-on, concept-first training built around real understanding — not memorization. Free interactive tools, structured programs, and 25+ years of real-world experience, all in one place.

Explore free tools and programs →