Is it possible to link storage gateway (s3 file) in aws which is on one account to link it to the s3 bucket present in another account ? Please share some insights.
I have tried finding it but no success, also there is no option to do it from console.
I think the answer to your question is here.
https://docs.aws.amazon.com/filegateway/latest/files3/add-file-share.html#cross-account-access
Another solution would be replicate buckts and mount storagateway in the replicated bucket.
https://docs.aws.amazon.com/AmazonS3/latest/userguide/replication-walkthrough-2.html