A popular blogging site plans to use AWS DataSync to migrate all the data from the on-premises network file system (NFS) server to AWS EFS. The blogging application constantly updates its on-premises dataset. You need to ensure that all the files saved at EFS are validated for data integrity. How would you set up the data verification in AWS DataSync?

Answer options:

A.Enable verification all the time.
B.Enable verification during initial file transfers and disable it during the final cut-over.
C.Disable verification during initial file transfers and enable it during the final cut-over.
D.Disable verification all the time.

Correct Answer – C
While transferring a constantly changing dataset between on-premise servers & EFS using AWS DataSync, you could initially uncheck Enable verification, because files at the source are slightly different from files at the destination. You can enable the verification during the final cut-over from on-premises to AWS.
Option A is incorrect as enabling data verification for a constantly changing dataset will lead to a slow data transfer.
Option B is incorrect as data verification needs to be performed during the final cut-over to ensure that all data is properly copied to EFS.
Option D is incorrect as disabling verification will not perform the data integrity check on the transferred data between on-premise servers and EFS.
For more information on using AWS DataSync, refer to the following URL:
https://aws.amazon.com/blogs/storage/migrating-storage-with-aws-datasync/