Selecting proper configuration for storage subsystem is one of the critical tasks when planning MS SQL Server deployment in the cloud. Every Amazon Elastic Compute Cloud (Amazon EC2) machine instance can be provisioned with Amazon Elastic Block Store (EBS) persistent block storage. EBS volumes are highly available and reliable storage volumes that can be attached to any instance. EBS volumes that are attached to an EC2 instance are exposed as storage volumes that persist independently from the life of the insta