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One clarification on top of the previous answer as an FYI. One VPN connection would have 2 Tunnels for high availability and if you use BGP based Active-Active tunnels and your CGW device supports ECMP routing then you can effectively get aggregate 2.5 Gbps of bandwidth per VPN when you terminate the VPN connection on Transit Gateway (VGW does not support ECMP)
In your use-case though highly likely that your ISP would throttle your bandwidth at 50 Mbps; if your application needs more bandwidth you will likely need to upgrade your internet circuit.
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Hello,
In the AWS VPN FAQ, you will see: "Each AWS Site-to-Site VPN connection has two tunnels and each tunnel supports a maximum throughput of up to 1.25 Gbps".
- If, on your side, you are limited to less than 1.25 Gbps (e.g. 50 Mbps), the available bandwidth for the connection will be limited to your value (e.g. 50 Mbps).
- But, if you have more bandwidth available on your side (e.g. 2 Gbps), the maximum bandwidth will still be limited to 1.25 Gbps.
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Thank you very much for the response Vincent.
A follow up question. If we are doing migration of our Web, App and Database servers and may be Archive Tapes to AWS with very limited time (discount Snow devices and direct connect for this example), how can we facilitate the migration in terms of bandwidth? Is there a way? And consider as we are doing the migration we don't want our daily business workload to be affected by the bandwidth bottleneck.
Thank you!
If you want to send data from on-prem to AWS but if you exclude Direct Connect or Snow devices, the remaining option is VPN. You could use multiple VPN tunnels in parallel as explained here (https://youtu.be/qmKkbuS9gRs?t=835) terminating on a Transit Gateway. It is important to understand that a single flow will still be limited to 1.25 Gbps. But if you have multiple flows, they will be able to use the multiple tunnels at the same time (ECMP). On you on-premises side, you need to work with your Internet Service Provider to get a higher bandwidth if you are limited to 50 Mbps. I don't know the quantity of data that you want to upload to AWS but if it's in the order of 50TB or more, it is strongly advised to use Snow devices (there is also a section related to Tape Data Migration in the Snowball FAQs: https://aws.amazon.com/snowball/faqs/).