hundreds of Terabytes => always use Snowball

Terabytes, low costs, limited time = AWS snowball devices

It took me quite some time to do the mental math for realising that the data can't be transferred in 30 days. Also, note the MBps (Megabits) and not Megabytes. 500Mbps is like 60MBps. That's a lame connection to transfer anything!

B and D would use existing 500 mbps Internet connection which cannot transfer more than ca. 160 TB in a month. C would cost a lot, take weeks to deliver, and still not provide more bandwidth. Thus A is the simply the only option, thus also the one with "lowest cost".

A. Order AWS Snowball devices to transfer the data. Use a lifecycle policy to transition the files to Amazon S3 Glacier Deep Archive.

one DataSync agent can use 10GBps and can setup a bandwidth. So total time = (700X1000)GB/10GBps = 70000 sec = 19.4 days. Using Multiple Snowball devices will involve ordering them from AWS, setting them up on your data-center for copy and then incurring the shipping cost for too and fro movement to your AWS cloud. if time constraint was critical , say 1 week then snowball would have been a viable option. But here we have 30 days, so DataSync will be less costly(takes `19days)

By ordering Snowball devices, the company can transfer the 700 TB of backup data from its data center to AWS. Once the data is transferred to S3, a lifecycle policy can be applied to automatically transition the files from the S3 Standard storage class to the cost-effective Amazon S3 Glacier Deep Archive storage class. Option B would require continuous data transfer over the public internet, which could be time-consuming and costly given the large amount of data. It may also require significant bandwidth allocation. Option C would involve additional costs for provisioning and maintaining the dedicated connection, which may not be necessary for a one-time data migration. Option D could be a viable option, but it may incur additional costs for deploying and managing the DataSync agent. Therefore, option A is the recommended choice as it provides a secure and efficient data transfer method using Snowball devices and allows for cost optimization through lifecycle policies by transitioning the data to S3 Glacier Deep Archive for long-term storage.

A is the correct answer. even though they have 500mbps internetspeed, it will take around 130days to transfer the data from on premises to AWS so they have only 1 option which is Snowball devices

A is the correct one

Q: What is AWS Snowball Edge? AWS Snowball Edge is an edge computing and data transfer device provided by the AWS Snowball service. It has on-board storage and compute power that provides select AWS services for use in edge locations. Snowball Edge comes in two options, Storage Optimized and Compute Optimized, to support local data processing and collection in disconnected environments such as ships, windmills, and remote factories. Learn more about its features here. Q: What happened with the original 50 TB and 80 TB AWS Snowball devices? The original Snowball devices were transitioned out of service and Snowball Edge Storage Optimized are now the primary devices used for data transfer. Q: Can I still order the original Snowball 50 TB and 80 TB devices? No. For data transfer needs now, please select the Snowball Edge Storage Optimized devices.

Snowball

9 Snowball devices are needed to migrate the 700TB of data.

Snow ball Devices the answe is AAAAA.

A is incorrect as DC is an expensive option. Correct answer should be C as the company already has 500Mbps that can be used for data transfer. By consuming all the available internet bandwidth, data transfer will complete in 3 hours 6 mins - https://www.omnicalculator.com/other/data-transfer

A is correct

a is correct but not less expensive.I think,should be D.

A is correct. Cannot copy files directly from on-prem to S3 Glacier with DataSync. It should be S3 standard first, then configuration S3 Lifecycle to transit to Glacier => Exclude D.