You must move petabytes with limited network bandwidth. What fits?
Why A is the answer
Transfer Appliance
Transfer Appliance ships data physically.
In detail
- Transfer Appliance ships data physically when networks are too slow.
- Compare with how long the network would take.
Use case
An illustrative scenario, not a real incident.
A research lab holds petabytes and has a slow link, so it ships a Transfer Appliance.
See it in different ways
flowchart TD
A{"What are you moving?"} -->|"Huge offline data"| B["Transfer Appliance"]
A -->|"SaaS or warehouse data into BigQuery"| C["BigQuery Data Transfer Service"]
A -->|"A relational database"| D["Database Migration Service"]
A -->|"Ongoing change data capture"| E["Datastream"]stateDiagram-v2 [*] --> Source Source --> TransferAppliance: petabytes, slow network Source --> Datastream: database changes, continuous Source --> DataTransferService: SaaS on a schedule TransferAppliance --> Validate Datastream --> Validate DataTransferService --> Validate Validate --> [*]
flowchart TD
Q{"Is the network fast enough?"}
Q -->|"Yes"| A0["Online transfer"]
Q -->|"No"| A1["Transfer Appliance"]Key point: Ship data when networks are too slow.
Why the other options are wrong
- B. A daily online transfer job
- An online job still uses the slow network.
- C. A manual upload through the console
- Console uploads do not scale.
- D. Pub/Sub with one message per file
- Pub/Sub carries messages, not bulk files.