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Answer: Use the Data Transfer appliance to perform an offline migration.
The correct answer is B: Use the Data Transfer appliance to perform an offline migration. While various options could be considered viable, the Data Transfer appliance is specifically designed for large-scale data migrations like this. The TURNAROUND TIME for using a Transfer Appliance typically falls within the 1-3 week range. Considering the size of the data at 10 TB, relying solely on network bandwidth might not be as efficient or reliable. Although option D (using gsutil -m) could transfer the data in approximately 30 hours, it's generally recommended for smaller data sizes (under 1 TB). Option A might increase the load on the database, which contradicts the requirement to minimize database load. Therefore, the most appropriate choice that aligns with Google-recommended practices, minimizes database load, and ensures a cost-effective and reliable migration is B.
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Your company is planning to migrate a substantial 10-TB database export from an on-premises environment to Google Cloud Storage. Given the current setup, the bandwidth between your on-premises environment and Google Cloud is 1 Gbps. You aim to minimize the overall migration time, reduce costs, and ensure that the database's load is as low as possible during the transfer process. Adhering to Google-recommended best practices, what approach should you take to efficiently carry out this migration?
A
Develop a Dataflow job to read data directly from the database and write it into Cloud Storage.
B
Use the Data Transfer appliance to perform an offline migration.
C
Use a commercial partner ETL solution to extract the data from the on-premises database and upload it into Cloud Storage.
D
Compress the data and upload it with gsutil -m to enable multi-threaded copy.