The document outlines the existing and future virtualization environments in a data center, detailing the configurations of VMware host clusters, network switches, and firewalls. It discusses the current disaster recovery strategies, associated challenges, and provides recommendations for improvement. Key elements include the relationships between the data center, disaster recovery center, and ERP server environments.

1. Existing Data Center Environment
Virtualization Environment
VMware Host Clusters
Top of Rack Switch
Core Switch
Firewall 1 x Paloalto PA3030
Internet and Link to DRC
Network Environment ERP Server Environment

2. Existing Disaster Recovery Center Environment
Virtualization Environment
Top of Rack Switch
Internet and Link to DC
Network Environment ERP Server Environment

3. Current Disaster Recovery Strategy Challange
Virtualization Environment
Top of Rack Switch
Internet and Link to DC
Network Environment ERP Server Environment

4. Future recommendation
Virtualization Environment
VMware Host Clusters
Top of Rack Switch
Core Switch
Firewall
Internet and Link to DRC
Network Environment ERP Server Environment

5. Current DC & DRC Network Challange
Top of Rack Switch
Core Switch
Firewall
Internet and Link to DRC
Network Environment
Top of Rack Switch
Internet and Link to DC
Network Environment