VMware Esc Server 2.5 released in early 2005, which is basically consistent with version 2.1 version, the following is an introduction to the new characteristics of version 2.5 from the VMware website:
Boot ESX Server hosts directly from Storage Area Networks (SANs) SAN Transparency lets virtual machines use native SAN storage with the same ease and flexibility as virtual disk files Use SAN-based utilities for virtual machine backup and replication Support for scripted and automated ESX Server host Installations Common Information Model (CIM) -compliant API and Object Model for Monitoring of Esx Server Host And Virtual Machine Storage Resources from ANY CIM-AWARE Client or Management Tool
