CoreQ Academy3.3 Given a scenario, use appropriate backup and recovery methods.
Backups only matter if you can restore them quickly and they have not been tampered with. Design for ransomware as well as hardware failure.
Backup types
- Incremental
- Backs up changes since the last backup of any type. Fast and small; restore needs the full plus every incremental.
- Full
- A complete copy. Simplest restore, most storage and time.
- Differential
- Backs up changes since the last full backup. Restore needs the full plus the latest differential.
Locations, schedule and protection
- On site
- Backups kept locally for fast restore.
- Off site
- Backups in another location, region or account to survive site disasters and attacks.
- Schedule
- How often backups run, set from the RPO.
- Retention
- How long backups are kept and how many versions.
- Replication
- Continuously copying data to another location; protects availability but also copies corruption or deletion.
- Encryption
- Protects backup confidentiality; manage keys separately.
Testing
- Testing
- Regular restore tests prove backups work.
- Recoverability
- Can the data actually be restored within the RTO?
- Integrity
- Is the restored data complete and uncorrupted (checksums)?
Recovery
- Bulk
- Restoring large amounts of data or whole systems.
- Granular
- Restoring a single file, mailbox or record.
- In-place
- Restoring over the original system.
- Parallel
- Restoring to a separate system alongside the original, for verification or investigation.
Check your understanding
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Original CoreQ Academy material, mapped to objective 3.3 of the publicly available CompTIA Cloud+ CV0-004 exam objectives (Exam objectives V4, document version 5.0). Not affiliated with or endorsed by CompTIA. Contains no exam questions.