Question 189
You need to migrate 1 PB of data from an on-premises data center to Google Cloud. Data transfer time during the migration should take only a few hours. You want to follow Google-recommended practices to facilitate the large data transfer over a secure connection. What should you do?
- A. Establish a Cloud Interconnect connection between the on-premises data center and Google Cloud, and then use the Storage Transfer Service.
- B. Use a Transfer Appliance and have engineers manually encrypt, decrypt, and verify the data.
- C. Establish a Cloud VPN connection, start gcloud compute scp jobs in parallel, and run checksums to verify the data.
- D. Reduce the data into 3 TB batches, transfer the data using gsutil, and run checksums to verify the data.
Cloud Interconnect provides a dedicated private connection between on-prem and Google Cloud for high bandwidth (up to 100 Gbps) and low latency. This facilitates large, fast data transfers. Storage Transfer Service supports parallel data transfers over Cloud Interconnect. It can transfer petabyte-scale datasets faster by transferring objects in parallel. Storage Transfer Service uses HTTPS encryption in transit and at rest by default for secure data transfers. It follows Google-recommended practices for large data migrations vs ad hoc methods like gsutil or scp. The other options would take too long for a 1 PB transfer (VPN capped at 3 Gbps, manual transfers) or introduce extra steps like batching and checksums. Cloud Interconnect + Storage Transfer is the recommended Google solution.