Hi 류호원(결제플랫폼팀) - Thanks for reaching out over Q&A Forum.
I would recommend you to start by reviewing the below links that talks about storage migration and points to consider when option for data transfer solution.
https://zcusa.951200.xyz/en-us/azure/storage/common/storage-migration-overview
You can check for AzCopy
You can also check for Blobfuse or NFS to mount your storage account on the Linux servers and transfer the data.
https://zcusa.951200.xyz/en-us/azure/storage/blobs/blobfuse2-what-is
https://zcusa.951200.xyz/en-us/azure/storage/blobs/network-file-system-protocol-support
Hope that helps!
Please let me know if there are any further queries/concerns, will be glad to assist.
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