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A consideration would be how to transport the data dump files to on-premise.
It is 4TB of large data, so even DirectConnect will take a reasonable amount of time.
It would also take a lot of time to migrate little by little while replicating using AWS DMS or other means.
I think it is essential to provide some downtime.
It is also necessary to test the migration and measure how long it will take.
If you use AWS DMS, please make sure you also have a supported version.
https://docs.aws.amazon.com/dms/latest/userguide/CHAP_Introduction.Sources.html
https://docs.aws.amazon.com/dms/latest/userguide/CHAP_Introduction.Targets.html
The following documents are best practices for migrating to RDS, but it is recommended to review them as the same considerations apply when migrating to on-premise.
https://docs.aws.amazon.com/prescriptive-guidance/latest/migration-sql-server/best-practices.html
As Riku mentioned, DMS is an option. If it's OK to have the DB down during the process so no change data capture is needed it's pretty simple to do.
However native SQl Server backup may be a better option for you - see https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/SQLServer.Procedural.Importing.html.
Also https://repost.aws/knowledge-center/native-backup-rds-sql-server.
@skinsman, Yes learning & gaining is fine, those articles shows how to do from On premise to AWS RDS..but My case reverse option..hence seeking an advise...surely some experts might advise to conisder what & all required like permissions,best option to move the files,if exsting db anything like db enryption exists if so how this can be consider
still Iam seeking what would be the best steps and how to do it.
what and all do I need to check in RDS that hosting SQL server database before migrating to on premise and what is the best way to do that.
step by step instruction too seeking...as I have a No knowledge too.
Hi, the best way is to gain some knowledge, starting with the approach and links that have been suggested. A bit of reading and experimentation will get you there much faster than waiting for detailed info from other people that may never come. Getting step-by-step instructions here probably isn't realistic. All the best.
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Thanks for the information, how ever we cant test the scenario and the time is very limit to migrate......how SQL server database can be moved to on premise from RDS is that like Backup and restore(if so what is the steps) and you said dump data --how this can be acheived...as said this has never done seeking some advise step by step is much appreciated..
Create backup files using the methods and tools described in the following documents. The procedure is similar to creating a backup file and then transferring it to on-premise to restore the data. https://docs.aws.amazon.com/ja_jp/AmazonRDS/latest/UserGuide/SQLServer.Procedural.Importing.html https://learn.microsoft.com/ja-jp/sql/ssms/download-sql-server-management-studio-ssms?view=sql-server-ver15