Creating Neo4j database backups/snapshots will consume not only disk space but also additional CPU, memory, and other related sources.
To minimize the impact of system resource constraints, Neo4j Aura will not start the backup job on any of the three Neo4j Aura nodes. Instead, Aura will provision another cluster node specifically for each backup job.
After the Aura backup node is created, it will copy all the database base files from other Aura nodes to its local storage and then start the backup job from there.
This Aura backup node will be automatically destroyed after the backup job is finished.