Virtualization

It is to mitigate workload management problems by reintroducing a single co-hesive system view onto the distributed IT infrastructure

(1) it is more than just LB
(2) Trends of applications and infrastructure
a. Serial apps: openMP, MainFrames, DAS
b. Client server: Java EE, open system, DAS
c. P2P, reliable messaging, Cluster, DAS
d. service virtualization service registration, discovery, Grid
(3) In SV, applications are encapsulated as services, distributed framwork to disseminate the work across service instances. It allows developers to assemble
building blocks from different application domains
SV decouples apps from HW
(4) In IV, is to infrastrcure to deliver JIT compute and storage capacity
automation, finer control at end-user service level-- utility