Metal Packages

You can crack metal packs on your main planet, so you only need enough storage on one planet.

Good morning,

Indeed, you need to have storage for all your daily production on one planet, hence the need to have at least one planet with more hangars than the others.

As you can see in the screenshot below, if you ever see a message with an orange triangle appear under the Metal Package, it means that your hangars are not big enough on the selected planet to get all the production.