Veeam BR – Backup Mode I/O Consideration
If you want to use Veeam BR as you backup and recovery software in your virtual environment, you have to consider the below I/O table about your backup mode and choose best backup mode according to your backup infrastructure and your company backup policies:
| Backup Mode | I/O Cost |
| Incremental Backup | 1x I/O on target (write for each changed block) |
| Reversed Incremental Backup | 3x I/O on target (write + read + write for each changed block) |
| Active Full Backup | 1x I/O on target (write for each block) |
| Synthetic Full Backup For Incremental Backup Mode | 2x I/O on target (read + write for each block) |
| Synthetic Full Backup For Incremental Backup Mode With Transform | 4x I/O on target (read + write + read + write for each block) |
Reversed Incremental will reduce your storage cost but increase I/O cost.
