AWS Certified Solutions Architect - Associate
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A company needs to transfer 600 TB of data from its on-premises network-attached storage (NAS) system to the AWS Cloud. The data transfer must be complete within 2 weeks. The data is sensitive and must be encrypted in transit. The company's internet connection can support an upload speed of 100 Mbps. Which solution meets these requirements MOST cost-effectively?
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UAnonymous
A
Use Amazon S3 multi-part upload functionality to transfer the files over HTTPS.
B
Create a VPN connection between the on-premises NAS system and the nearest AWS Region. Transfer the data over the VPN connection.
C
Use the AWS Snow Family console to order several AWS Snowball Edge Storage Optimized devices. Use the devices to transfer the data to Amazon S3.
D
Set up a 10 Gbps AWS Direct Connect connection between the company location and the nearest AWS Region. Transfer the data over a VPN connection into the Region to store the data in Amazon S3.
Explanation:
Explanation
Let's analyze each option:
Option A: Use Amazon S3 multi-part upload functionality to transfer the files over HTTPS.
- Problem: With a 100 Mbps internet connection, transferring 600 TB would take too long.
- Calculation: 600 TB = 600 × 1024 GB = 614,400 GB = 4,915,200 Gb At 100 Mbps = 12.5 MB/s = 0.0125 GB/s Time required: 614,400 GB ÷ 0.0125 GB/s = 49,152,000 seconds ≈ 569 days This is far beyond the 2-week requirement.
Option B: Create a VPN connection between the on-premises NAS system and the nearest AWS Region.
- Problem: Same bandwidth limitation as Option A. A VPN connection still uses the existing 100 Mbps internet connection, so the transfer time would be the same ~569 days.
Option C: Use the AWS Snow Family console to order several AWS Snowball Edge Storage Optimized devices.
- Correct choice: AWS Snowball is specifically designed for large-scale data transfers when internet bandwidth is insufficient.
- Benefits:
- Time: Physical shipping is much faster than transferring over a 100 Mbps connection
- Cost-effective: No need for expensive network upgrades
- Security: Data is encrypted at rest and in transit
- Scalability: Multiple Snowball devices can be used in parallel
- Meets deadline: Can complete within 2 weeks
Option D: Set up a 10 Gbps AWS Direct Connect connection.
- Problem: While this would provide sufficient bandwidth (10 Gbps vs 100 Mbps), it's:
- Not cost-effective: Direct Connect has high setup costs and monthly fees
- Time-consuming: Setting up Direct Connect takes weeks to months
- Overkill: For a one-time transfer of 600 TB, Snowball is more economical
Why Snowball is the best choice:
- Bandwidth limitation: 100 Mbps is insufficient for 600 TB in 2 weeks
- Cost optimization: Snowball has predictable pricing per device with no long-term commitments
- Security: Snowball provides 256-bit encryption for data at rest
- Time requirement: Physical shipping can meet the 2-week deadline
- One-time transfer: Snowball is ideal for one-time large data migrations
Additional considerations:
- Snowball Edge Storage Optimized devices can hold up to 80 TB each, so approximately 8 devices would be needed
- AWS provides tracking and chain-of-custody documentation
- Data transfer occurs offline, avoiding network congestion and security risks
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