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Using Snowcone or Snowball for the initial data transfer is a common and reliable method, especially when dealing with large datasets that might be time-consuming to transfer over the internet. If you have a stable and high-bandwidth internet connection, you might consider using AWS Direct Connect or AWS VPN to transfer the data directly to AWS S3 over the network, without the need for physical devices. This method could be more cost-effective if your network connectivity is robust enough to handle the data transfer efficiently. However, if network bandwidth is limited or unstable, Snow devices offer a more robust and predictable solution.
It's also worth evaluating AWS DataSync and AWS Storage Gateway for compatibility with your specific applications and workload requirements
AWS VPNs can offer upto 1.25Gbps . Data Size =8TB =68,719,476,736,000 bits So, for transfer time you can divide data size by network speed(of your system) Let say your network connection have speed of AWS VPN support aka 1.25 Gbps then by 8TB(take it in bits)/1.25=55,000 seconds ==> 15 hour of time
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Thanks Animesh. For 8TB of data, what would be the recommended minimum network connection speed that should be in place to attempt this online migration? The client does not have Direct Connect and would be using a Site to Site VPN