How often should backups be made to meet an RPO of 2…

To meet the RPO (Recovery Point Objective) of 2 hours, backups should be performed at intervals not exceeding 2 hours. This means that the maximum time between the last backup and a potential failure should be no more than 2 hours.

To ensure reliability and minimize the risk of data loss, it is recommended to make backups more frequently than the strictly required 2 hours. For example:

Hourly or more often.
Use incremental or differential backups for more frequent snapshots of changes between full backups.

It is also important not only the interval between backups but also their successful completion and the ability to restore. To meet the 2-hour RPO, it is necessary to:

Regularly check the success of backup tasks.
Conduct test restores to confirm the integrity of backups and the ability to restore within the required RPO.

An example of a backup job configuration (pseudocode):

job:
  name: daily_backup
  schedule: "0 */2 * * *" # Cron expression for every 2 hours
  type: full
  destination: s3://my-backup-bucket

#!/bin/bash
# Simple script to run backup
timestamp=$(date +%F_%H-%M-%S)
backup_dir="/data/backup/$timestamp"

# Create directory for backup
mkdir -p "$backup_dir"

# Backup command (example for databases or file system)
# pgdump my_db > "$backup_dir/my_db.sql"
# rsync -a /app_data "$backup_dir/app_data"

# Check success and notify
if [ $? -eq 0 ]; then
  echo "Backup successful: $timestamp"
else
  echo "Backup failed: $timestamp"
  # Add notification logic (e.g., email, Slack)
fi

How often should backups be made to meet an RPO of 2 hours?