Elastic Block Storage’s performance varies. It can go above the SLA and after that drop below it. The average disk I/O rate of SLA can frustrate performance experts searching for consistent and reliable disk throughout a server. But, the virtual instances of AWS don’t behave this way.

The EBS volume can be backed up through a graphical user interface such as elasticfox or the snapshot facility of an API call. The performance here can be improved using Linux software raid and striping across the volumes.

BY Best Interview Question ON 07 Feb 2019