What are the different types of backups?
D4 · Operations · CompTIA Security+ SY0-701| Type | What it backs up | Backup speed | Restore speed |
|---|---|---|---|
| Full | Everything | Slowest | Fastest (1 tape) |
| Incremental | Changes since last backup (any type) | Fastest | Slowest (many tapes) |
| Differential | Changes since last full backup | Medium | Medium (2 tapes) |
Incremental = fastest backup, slowest restore (need full + all incrementals). Differential = medium both ways (need full + latest differential). Full = slowest backup, fastest restore. The 3-2-1 rule: 3 copies, 2 different media, 1 offsite.