Learn Portuguese (Portugal): O armazenamento é versátil, mas raramente temos muito que guardar. - Storage is versatile, but we rarely have much to store.

You could use para, but using que + infinitive is a standard Portuguese structure after indefinite pronouns like muito (much), algo (something), pouco (little), or nada (nothing). This creates an infinitival relative clause. While it literally translates to "much that to store," it functions exactly like the English "much to store."

Does guardar mean "to guard" or "to store" here?

While guardar can mean "to guard," its most common everyday meaning in Portuguese is "to put away," "to keep," or "to store." Because the first half of the sentence establishes the topic as storage (armazenamento), "to store" or "to keep" is the exact intended meaning here.

What is the root of the noun armazenamento?

It comes from the noun armazém, which means "warehouse" or "storehouse." The verb form is armazenar (to put in a warehouse / to store), and adding the suffix -amento turns the action into the abstract noun "storage."

Could we change the word order to temos raramente?