An organization has 300 TB of historical archive data stored on local Network Attached Storage (NAS) devices in their on-premises data center. The data center has a limited outbound internet connection of 100 Mbps, and uploading the data over the network would take several months to complete. Which Google Cloud transfer solution should the organization use to perform this one-time migration to Cloud Storage within a few days?

Transfer Appliance: ### **What Transfer Appliance is:** **Transfer Appliance** is a secure, high-capacity hardware storage server provided by Google Cloud to physically migrate large volumes of data (typically tens to hundreds of terabytes or petabytes) to Cloud Storage when uploading over the internet or direct network connections is infeasible or too slow. ### **How it meets the requirements:** - **Overcomes network bandwidth bottlenecks (✓):** With a 100 Mbps connection, transferring 300 TB of data would take over 300 days of continuous full-saturation bandwidth. Transfer Appliance bypasses network constraints completely by shipping a physical device. - **Optimized for large, one-time bulk migrations (✓):** The appliance is specifically intended for one-off mass data center migrations rather than recurring incremental transfers. - **Standard local filesystem mounting (✓):** Supports standard protocols such as **NFS**, **SMB**, and **CIFS**, allowing operators to connect the appliance directly to the local network and capture data at multi-gigabit LAN speeds. - **Fast turnaround time (✓):** Once data is copied locally and encrypted, the device is shipped to a Google Cloud facility where the data is ingested directly into Cloud Storage within days. ### **Key advantages:** - **Physical rack-mountable hardware:** Pre-configured storage arrays delivered directly to the customer data center. - **High-speed local ingestion:** Enables fast local data capture via 10GbE / 40GbE network interfaces. - **Built-in encryption:** Protects data in transit using strong customer-managed or Google-managed encryption keys before the device leaves your physical premises. - **Cost efficiency for large volumes:** Avoids costly temporary network bandwidth upgrades for one-time data transfers. ### **Why this is optimal:** When calculating the trade-off between **network transfer time** and **physical shipping time**, migrations of large datasets (over 20–50 TB) across limited or congested internet links are completed significantly faster and more reliably using **Transfer Appliance** than over-the-wire transfer methods.

Compare Storage Transfer Service Transfer Appliance | Unlock the power of your data in the cloud! Get hands-on with Google Cloud's core data services like BigQuery and Looker to validate your practical skills in data ingestion, analysis, and management, and earn your Associate Data Practitioner certification!

FundamentalAssociate Data Practitioner

An enterprise needs to migrate 300 TB of historical backup files from an on-premises datacenter to a Google Cloud Storage bucket. The datacenter has a constrained and unreliable outbound internet connection of only 20 Mbps, and the migration must be finished within two weeks. Which Google Cloud data transfer solution should the enterprise choose?

Choose the appropriate data transfer tool (e.g., Storage Transfer Service, Transfer Appliance)

FundamentalAssociate Data Practitioner

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Choose the appropriate data transfer tool (e.g., Storage Transfer Service, Transfer Appliance)

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FundamentalAssociate Data Practitioner

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Choose the appropriate extraction tool (e.g., Dataflow, BigQuery Data Transfer Service, Database Migration Service, Cloud Data Fusion)

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AdvancedProfessional Cloud DevOps Engineer

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Associate Data Practitioner

Compare Storage Transfer Service Transfer Appliance

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