Incremental backup in Proxmox is a strategy that backs up only the data that has changed since the last full or incremental backup. Compared with a full backup, incremental backups significantly reduce storage usage and backup time because only modified data blocks are recorded. In the Proxmox Virtual Environment (PVE), incremental backups are typically implemented through Proxmox Backup Server (PBS), which enables efficient and deduplicated backups. By using incremental backups, administrators can perform backups more frequently, improve recovery point objectives (RPO), and reduce the risk of data loss. This approach provides a practical way to protect virtual machines while optimizing storage resources and backup performance.
