You need to securely and quickly move 10 TB of sensitive patient records from a relational database into BigQuery. Which transfer approach meets security and time requirements?

The Transfer Appliance is ideal for moving large datasets (10 TB in this case) quickly and securely, especially when network bandwidth is a bottleneck or the data is sensitive. Shipping the appliance physically bypasses internet transfer limitations and potential vulnerabilities. Avro is an excellent choice for data export as it's a row-based, schema-rich format that handles complex data types well, preserving data integrity during transfer. Loading Avro directly into BigQuery is efficient. Using gsutil for 10 TB over the internet might be too slow given the "quickly" requirement. Creating a public URL for sensitive patient records is a severe security risk, making those options unacceptable. CSV is less robust than Avro for complex data and schema evolution.