VKSF 423 System Administration III Service Deployment and the Virtualization of Services

Announcements Lab One: VMWare installation and Core Service Deployment Reading Consolidation IDC.pdf Course conference: Name: vksf Subject: Border Sys Admin III 20033

Current Service Deployment Architecture Based on explosion from 1990’s Guiding principle: One box per service Many boxes ameliorates potential for all services to go down at once. Based on availability of many low cost, low power, error prone servers Effective form of load balancing Need to deploy new apps quickly IT not effectively managed

Organizational Characteristics Organizations are smaller dependence on IT infrastructure low Maintenance windows available and frequent Patient users

Problems? Underlying assumptions have changed Servers are now much more powerful Explosion of new apps has abated Infrastructure not as error prone More sophisticated management of IT Desire to control costs More experience with IT

Problems? Cont. Server infrastructure explosion, scarce real estate in the server room. Utilization rates very low. Mission critical apps need Production Test Disaster recovery Server support costs very high Cost pressures Desire for more sophisticated disaster recovery capabilities

Organizational Characteristics Organizations are bigger and more complex Maintenance windows virtually non- existent IT and apps much more deeply entrenched in the organization Users expect IT infrastructure to be available 24x7x365

Virtual Infrastructure Goal: divorce association of a service with a physical box Improve utilization rates to around 60-80% Just-in-time provisioning of server resources Zero downtime for hardware maintenance and upgrades Zero downtime for software maintenance and upgrades

Virtual Infrastructure cont. Reduce ratio of sys admins to servers Improve build consistency across servers and apps Increase success rates for patch rollouts Improve manageability of server resources Gain management control of IT costs and service levels

Other Initiatives Consolidation of desktops and desktop images Securing the IT infrastructure Better matching of server resources to service needs Grids Clusters

What the vendors call it Sun: Mission Critical Application Server Consolidation (MCASC) VMWare: Virtual Center Microsoft/Connectix: Virtual PC Virtual Server IBM: On Demand Computing HP:

New Capabilities New pricing structures Increased ability to outsource New Service Level Agreements structures New services Better DR capabilities