To manage a "family data warehouse," many people use a combination of physical and digital solutions to store and secure various data categories. Physical documents might be kept in fireproof safes, while digital copies can be stored on encrypted drives or cloud services with regular backups. Organizational strategies often include structured folders and indexing to ensure data can be easily retrieved. Data retention balances legal and personal needs against risks like identity theft and data decay. Specialized software and services also aid in managing specific categories but consider security and longevity of service providers.