How to upload files to ‘local’ and ‘s3’ storage at the same time

You can move media from one model to another with the move method.

Moving media

Any conversions defined  $anotherModel will be performed. The name and the custom_properties will be transferred as well.

$mediaItem = $model->getMedia()->first();

$movedMediaItem = $mediaItem->move($anotherModel, 'new-collection', 's3');

Copying media

You can also copy media from one model with the copy method.

$mediaItem = $model->getMedia()->first();

$copiedMediaItem = $mediaItem->copy($anotherModel, 'new-collection', 's3');