48 lines
1,021 B
Markdown
48 lines
1,021 B
Markdown
# OPS-3: Backup and Recovery
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Status: not started
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Domain:
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- 4.0 Operational Procedures
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Objective alignment:
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- 4.3 Backup and recovery
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## What You Need To Know
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Backups only matter if they can be restored.
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Backup types:
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- Full: backs up all selected data.
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- Incremental: backs up changes since the last backup of any type.
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- Differential: backs up changes since the last full backup.
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- Synthetic full: builds a full backup from previous backup data.
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Rotation concepts:
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- Onsite and offsite
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- Grandfather-father-son
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- 3-2-1 rule
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Restore options:
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- Restore in place
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- Restore to alternate location
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## Memory Trick
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Use **F-I-D-S**:
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- **F**ull
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- **I**ncremental
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- **D**ifferential
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- **S**ynthetic full
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Shortcut:
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- **Backups are promises; restore tests prove them.**
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## Exam Clues
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- Incremental backups are small and fast but restore chains can be longer.
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- Differential backups grow until the next full backup.
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- 3-2-1 means three copies, two media types, one offsite copy.
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- Test restores on a defined schedule.
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