Step 3: The Pro Secret – Bypass the Browser Upload Entirely

Modifying plugin files is generally discouraged because updates will overwrite your changes. However, for a one-off migration of a massive site, this is a viable solution. Always keep a separate off-server backup before proceeding.

wp ai1wm import --cli --file=/path/to/core-export.wpress

If you are migrating a site larger than 100GB (e.g., 250GB), the web UI is useless. Use WP-CLI.

Trying to upload a single 100GB .wpress file is like trying to swallow an elephant whole. The most reliable fix is to break the file down.

If you are dealing with a single massive site (100GB+) and want a hassle-free, guaranteed-to-work solution, the official Unlimited Extension from the plugin developers is the best way to go. This is a premium add-on specifically designed to , allowing you to move sites of any size without any manual server tweaks.

You need to modify the plugin's source code directly via FTP or cPanel File Manager:

The limits you are seeing are restrictions enforced by your web server and hosting provider's PHP configuration, not by the plugin itself. Every web server has settings that control how large a file you can upload and how long a process can run. The main "culprits" are two PHP settings: upload_max_filesize (the maximum size of a single file) and post_max_size (the maximum size of all data in a form submission).

@ini_set( 'upload_max_size' , '100G' ); @ini_set( 'post_max_size', '100G' ); @ini_set( 'memory_limit', '2048M' ); @ini_set( 'max_execution_time', '0' ); @ini_set( 'max_input_time', '0' ); Use code with caution.

add_filter( 'ai1wm_max_file_size', function() return 100 * 1024 * 1024 * 1024; // 100GB );

Set to 10 hours ( 36000 seconds) so the server doesn't kill the extraction process prematurely. Method 4: Exclude Heavy Folders to Shrink the File

If you still see this error after editing constants.php , the plugin has triggered a secondary validation check. Ensure you are using a compatible version of the plugin, or thoroughly look through the plugin's storage or lib subdirectories for any secondary file size definitions. Broken Permalinks After Migration

Log into your hosting control panel (cPanel, CyberPanel, or RunCloud) and locate your . Apply the following baseline values for a 100GB migration:

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