Barb's organization has a recovery point objective of 6 hours. At least how often should Barb conduct incremental backups to meet this RPO?

Barb needs to back up her data at least once every 6 hours to meet a 6-hour RPO, and Barb might even choose to run her backups slightly more often to ensure the RPO can be met. Running backups every hour significantly exceeds that target, and may have other implications on performance time to recover, so a more aggressive timeframe would need to be carefully reviewed. Every 12 or 24 hours would not meet the RPO set by Barb's company.