Physically unplug a server or disable a network switch to see if the redundant system picks up the slack as designed.
Data is written to the primary and secondary storage simultaneously. It offers zero data loss but requires high-speed connectivity. create redundant data recovery mechanism
restic -r /mnt/backup backup /data
| RAID Level | How it works | Tolerates | Use case | |------------|--------------|-----------|----------| | RAID 1 | Mirroring | 1 drive failure | OS, small critical data | | RAID 5 | Striping + parity | 1 drive failure | General storage (3+ drives) | | RAID 6 | Striping + dual parity | 2 drive failures | Large media, high safety | | RAID 10 | Mirrored stripes | 1–2 drives | Databases, high I/O | Physically unplug a server or disable a network