Which changes can be made to speed up the data transfer?

Explanations:

Clustering two Snowball Edge devices together will not directly address the issue of slow data transfer due to the overhead of encrypting small files. This option primarily focuses on increasing the number of devices, but it doesn’t address the root cause of the slow transfer.

The S3 Adapter is designed for transferring data directly to Amazon S3, bypassing the NFS file interface. However, the question specifically involves the NFS file system and the file interface on the Snowball Edge, so switching to the S3 Adapter will not help with the existing setup.

Increasing the number of parallel copy jobs will improve throughput by allowing more files to be transferred simultaneously. This helps mitigate the slow transfer caused by copying a large number of small files, which introduces overhead in both encryption and network transfer.

Connecting to the USB interface and copying the files locally bypasses the Snowball Edge file interface but does not resolve the issue. This approach would be impractical and does not align with the design intended for use with Snowball Edge.