Best way to migrate a large amount of documents (70-80gbs)

Hi All,

Looking for the best way to move a large amount of documents from an external system into Appian. We are replacing an existing mainframe system, and with that we are doing a doc and data migration. These documents are broken out into a logical structure, and I tried to use the upload zip piece. But Appian will only allow for folders under 1GB. I tried to break out the folders into smaller folders, but even at 600mb a folder, the system was still getting choked up. They are in the cloud. Any ideas/approaches to executing a large document migration?

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