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Answer: Order an AWS Snowball Edge Storage Optimized device. Use AWS Database Migration Service (AWS DMS) with AWS Schema Conversion Tool (AWS SCT) to migrate the database with replication of ongoing changes. Send the Snowball Edge device to AWS to finish the migration and continue the ongoing replication.
## Explanation **Correct Answer: A** **Why Option A is correct:** 1. **Snowball Edge Storage Optimized** is specifically designed for large-scale data transfers (up to 80 TB per device). For a 20 TB database, this is the most appropriate Snowball device. 2. **Cost-effectiveness**: Snowball Edge Storage Optimized is cheaper than Snowmobile (which is for exabyte-scale data) and more cost-effective than a dedicated Direct Connect connection for a one-time migration. 3. **Timeframe**: With a 2-week deadline, Snowball Edge can handle the transfer efficiently. 4. **Minimal downtime**: Using AWS DMS with ongoing replication ensures minimal downtime during the cutover. **Why Option B is incorrect:** - **Snowmobile** is designed for exabyte-scale data transfers (100 PB capacity). Using it for a 20 TB database would be overkill and significantly more expensive than necessary. **Why Option C is incorrect:** - **Snowball Edge Compute Optimized with GPU** is designed for compute-intensive workloads, not primarily for storage. It's more expensive than the Storage Optimized version and not the most cost-effective choice for a database migration. **Why Option D is incorrect:** - **Direct Connect 1 GB dedicated connection** would be expensive for a one-time migration and may not complete within 2 weeks given the 20 TB size. The transfer time calculation: 20 TB = 20,000 GB. At 1 Gbps (theoretical maximum 125 MB/s), it would take approximately 44 hours of continuous transfer at full speed, but real-world speeds are lower, and this doesn't account for network overhead, making it less reliable and potentially more expensive than Snowball. **Key Considerations:** - For large database migrations (10+ TB), AWS Snowball Edge Storage Optimized is typically the most cost-effective solution. - AWS DMS with ongoing replication ensures minimal downtime by continuously replicating changes during the migration. - The combination of Snowball for the bulk data transfer and DMS for ongoing replication provides the best balance of cost, speed, and minimal downtime.
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A company needs to migrate a MySQL database from its on-premises data center to AWS within 2 weeks. The database is 20 TB in size. The company wants to complete the migration with minimal downtime.
Which solution will migrate the database MOST cost-effectively?
A
Order an AWS Snowball Edge Storage Optimized device. Use AWS Database Migration Service (AWS DMS) with AWS Schema Conversion Tool (AWS SCT) to migrate the database with replication of ongoing changes. Send the Snowball Edge device to AWS to finish the migration and continue the ongoing replication.
B
Order an AWS Snowmobile vehicle. Use AWS Database Migration Service (AWS DMS) with AWS Schema Conversion Tool (AWS SCT) to migrate the database with ongoing changes. Send the Snowmobile vehicle back to AWS to finish the migration and continue the ongoing replication.
C
Order an AWS Snowball Edge Compute Optimized with GPU device. Use AWS Database Migration Service (AWS DMS) with AWS Schema Conversion Tool (AWS SCT) to migrate the database with ongoing changes. Send the Snowball device to AWS to finish the migration and continue the ongoing replication.
D
Order a 1 GB dedicated AWS Direct Connect connection to establish a connection with the data center. Use AWS Database Migration Service (AWS DMS) with AWS Schema Conversion Tool (AWS SCT) to migrate the database with replication of ongoing changes.