{
  "schema": "https://storagestudio.us/schema/wiki-page.v1",
  "title": "Two-way sync",
  "slug": "glossary-two-way-sync",
  "url": "https://storagestudio.us/wiki/glossary-two-way-sync",
  "markdown_url": "https://storagestudio.us/wiki/glossary-two-way-sync.md",
  "category": "Glossary",
  "category_url": "https://storagestudio.us/wiki/glossary/",
  "tags": [
    "glossary",
    "data transfers",
    "sync"
  ],
  "summary": "Two-way sync keeps two places the same by copying changes in either direction. In Data Transfers it is called Bidirectional sync.",
  "published_at": "2026-10-01T06:16:41.000Z",
  "updated_at": "2026-10-01T05:35:59.000Z",
  "headings": [],
  "links_out": [
    {
      "slug": "glossary-one-way-sync",
      "label": "one-way sync",
      "exists": true,
      "url": "https://storagestudio.us/wiki/glossary-one-way-sync"
    },
    {
      "slug": "two-way-sync-first-run",
      "label": "Two-way sync and the First run box",
      "exists": true,
      "url": "https://storagestudio.us/wiki/two-way-sync-first-run"
    },
    {
      "slug": "copy-move-sync-or-two-way-sync",
      "label": "Copy, Move, Sync or Two-way sync",
      "exists": true,
      "url": "https://storagestudio.us/wiki/copy-move-sync-or-two-way-sync"
    }
  ],
  "links_in": [
    {
      "slug": "copy-move-sync-or-two-way-sync",
      "title": "Copy, Move, Sync or Two-way sync",
      "url": "https://storagestudio.us/wiki/copy-move-sync-or-two-way-sync"
    },
    {
      "slug": "glossary-one-way-sync",
      "title": "One-way sync",
      "url": "https://storagestudio.us/wiki/glossary-one-way-sync"
    },
    {
      "slug": "shared-folders-between-macs",
      "title": "Shared Folders: keeping a folder the same on two Macs",
      "url": "https://storagestudio.us/wiki/shared-folders-between-macs"
    },
    {
      "slug": "two-way-sync-first-run",
      "title": "Two-way sync and the First run box",
      "url": "https://storagestudio.us/wiki/two-way-sync-first-run"
    }
  ],
  "diagrams": [],
  "images": [],
  "screenshots_pending": [],
  "faqs": [],
  "text": "Two-way sync keeps two places the same by copying changes in either direction: add, edit or delete a file on one side, and the same happens on the other. If the same file changes on both sides between runs, that's a conflict . In Data Transfers this is the Bidirectional sync operation: \"Keep both sides in sync. Changes on either side propagate to the other. Conflicts logged.\" The very first run for a pair of places needs the First run for this pair box ticked, so Storage Studio can record a starting point. Never tick it again on later runs for the same pair — it would overwrite one side with the other. If you only want changes to flow one way, use one-way sync instead. See also: Two-way sync and the First run box · Copy, Move, Sync or Two-way sync",
  "markdown": "**Two-way sync** keeps two places the same by copying changes in **either** direction: add, edit or delete a file on one side, and the same happens on the other. If the same file changes on both sides between runs, that's a *conflict*.\n\nIn Data Transfers this is the **Bidirectional sync** operation: *\"Keep both sides in sync. Changes on either side propagate to the other. Conflicts logged.\"*\n\nThe very first run for a pair of places needs the **First run for this pair** box ticked, so Storage Studio can record a starting point. Never tick it again on later runs for the same pair — it would overwrite one side with the other.\n\nIf you only want changes to flow one way, use [one-way sync](https://storagestudio.us/wiki/glossary-one-way-sync) instead.\n\nSee also: [Two-way sync and the First run box](https://storagestudio.us/wiki/two-way-sync-first-run) · [Copy, Move, Sync or Two-way sync](https://storagestudio.us/wiki/copy-move-sync-or-two-way-sync)\n"
}