Multi-Site File Distribution

Head office publishes a price file, and by morning forty branches need it - the same file, every site, provably. One-to-many distribution looks like ordinary file transfer multiplied, but the multiplication changes the problem. One failed site breaks the promise, and thin branch links punish naive designs. Knowing that every site has the right version becomes its own discipline.

This series covers the one-to-many problem properly. It starts with the distribution problem shapes and hub designs for pushing to branches. It compares replication against scheduled transfer for keeping sites aligned. It covers distributing over thin and unreliable links, and proving every site got the right version. It finishes with a worked design for a realistic forty-branch estate.

Articles in This Series

• The Multi-Site Distribution Problem, Mapped
  This article covers the one-to-many patterns - content push, configuration distribution, data feeds to branches. It covers the axes that drive design: site count, frequency, urgency, and how identical sites must be.
• Hub Designs for Branch Distribution
  This article compares central push versus branch pull, and covers scheduling in waves so the hub survives. It covers per-site state tracking, and the branch that was offline when everyone else got the file.
• Replication vs Scheduled Transfer for Site Sync
  This article compares continuous replication and explicit transfer jobs for the multi-site case. It covers consistency behavior, conflict honesty, bandwidth profiles, and where each belongs in one estate.
• Distributing Over Thin and Unreliable Site Links
  This article covers small-branch reality: staggering, delta thinking, resume on flaky links, and off-hours windows across timezones. It explains monitoring that treats each site's delivery as its own promise.
• Proving Every Site Got the Right Version
  This article covers per-site verification: manifests and hashes, version markers, and the distribution report that answers which sites are current. It covers alerting on the stragglers before they matter.
• A Worked Multi-Site Distribution Design
  This article works through a forty-branch estate end to end: nightly price file plus weekly content set. It covers hub layout, wave scheduling, verification, straggler handling, and the reasoning behind each choice.

Explore More Topics

This series is part of the Sysax file transfer topic library. The library covers the protocols, security practices, automation techniques, and operational skills behind reliable file transfer. The library pairs well with the practical tools we build. Sysax Multi Server is a secure FTP, FTPS, SFTP, and HTTPS server for Windows. Sysax FTP Automation schedules and scripts secure transfers so the routine ones run themselves.