Sunday, May 24, 2015

Application and application virtualization in DataCenter

Application :

      A software program that provides logic for computing operations

      Commonly deployed applications in a data center
4  Business applications – email, enterprise resource planning (ERP), decision support system (DSS)
4  Management applications – resource management, performance tuning, virtualization
4  Data protection applications – backup, replication
4  Security applications – authentication, antivirus

      Key I/O characteristics of an application
4  Read intensive vs. write intensive
4  Sequential vs. random
4  I/O size

Application Virtualization :

Definition :
             It is the technique of presenting an application to an end user without any installation, integration, or dependencies on the underlying computing platform.

      Allows application to be delivered in an isolated environment
4  Aggregates Operating System (OS) resources and the application into a virtualized container
4  Ensures integrity of Operating System (OS) and applications
4  Avoids conflicts between different applications or different versions of the same application


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