No, there is no downtime expected as part of the migration process. Performance implications to a live site are similar to running a backup for the site.
Change the end of Dropbox URLs from
dl=1 so we can import your site archive properly. See the Dropbox documentation: How do I force a file or folder to download or render on dropbox.com?
No. If any of your database tables are using the MyISAM engine, you'll need to convert them to InnoDB.
No. The import will fail if multiple SQL files are present. Only provide one
.sql file per site archive.
No. The import will fail if multiple
settings.php files are present. Pantheon does not need the
settings.php file to import the site. To prevent import problems, it's best to remove
Guided Migration does not support local sites. WordPress users should manually migrate.
If you'd like your existing Drupal site to get one-click updates from your Custom Upstream, then the migration process will be slightly different. The general process will be the same as a vanilla Drupal site, but start with Create New Site instead of Migrate existing site. Then use
terminus site:import <site> <url> to import your site archive, or follow the Manual migration instructions if your site archive exceeds file size limits.
You can manually export and migrate your site as an alternative to
drush. For details, see Manually Migrate Sites to Pantheon.
Drupal users with access to Drush 8 or earlier can run the provided Drush command to generate an archive then upload it to a third party service (like Dropbox or Google Drive) to continue the standard migration procedure. You must manually migrate your site if Drush 8 is not available or the archive file size exceeds 500MB.
Most migrations are completed within two hours. The migration time depends solely on the size of your site, so be aware that it may take more or less time than estimated. We will send you an email when your migration is complete. If there are any issues with the migration, we will notify you by email.
You must review WordPress known issues for potential extra steps.
You can make a copy of a WordPress site on Pantheon by following the standard migration procedure. The procedure does not deviate for WordPress sites already hosted on Pantheon, and is preferred since it's built into the Site Dashboard.