What is the difference between EBS and Instance Store?
EBS Volume can attached and detach on the same or different EC2 instances and its persistence.
data's will be available even though the instances has been stopped, hibernated and termisnated.
data will be deleted or erased in the Instances store once its, stopped, deleted, or terminated.
Can you take a backup of EFS like EBS, and if yes, how?
yes we can take a Elastic file system backup as recovery point in the S3 bucket and we can restore it to the Ec2 instances which is located in different AWS account, Regions, Availability zone.
we can achieve this by AWS backup and EFS to EFS replication services.
How do you auto-delete old snapshots?
we can use data lifecycle manager and AWS backup to perform the auto - delete and existing snapshots.
optionally we can use Lambda function and Event bridge.
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