EVS is a scalable virtual block storage service that is based on the distributed architecture. You can create EVS disks online and attach them to ECSs. The method for using EVS disks is the same as that for using hard disks on a traditional server. EVS disks have higher data reliability and I/O throughput and more user-friendly than traditional hard disks. EVS disks are suitable for file systems, databases, and system software or applications that require block storage devices.
EVS disks, including data and system disks, can be encrypted using keys provided by the KMS service, improving the EVS disk data security.