Moving all your data, 9TB edition

This post details a complex data migration of GitLab.com from on-premises hardware to AWS. It highlights the challenges of moving 9TB of data with minimal downtime, exploring DRBD as a solution for live data synchronization and detailing the intricate networking setup (IPIP tunnels, IPsec) required to bridge the on-premises and AWS environments. It also touches upon the use of DRBD for high availability and the transition to AWS EBS for easier backups.