Server and storage consolidation is an approach to the efficient usage of computer server resources in order to reduce the total number of servers or server locations that an organization requires.
A server cluster is a group of independent servers running Linux/Unix/Windows Server working together as a single system to provide high availability of services for clients. When a failure occurs on one computer in a cluster, resources are redirected and the workload is redistributed to another computer in the cluster. You can use server clusters to ensure that users have constant access to important server-based resources. Server clusters are designed for applications that have long-running in-memory state or frequently updated data. Typical uses for server clusters include file servers, print servers, database servers, and messaging servers.
Replication in computing involves sharing information so as to ensure consistency between redundant resources, such as software or hardware components, to improve reliability, fault-tolerance, or accessibility.
Virtualization technology increases efficiency in your data center by enabling today's x86 servers to run multiple operating systems and applications. Workloads get deployed faster, performance and availability increases and operations become automated, resulting in IT that's simpler to manage and less costly to own and operate.
Elimination of single points of failure. This means adding redundancy to the system so that failure of a component does not mean failure of the entire system. High availability engineering must provide for reliable crossover. Detection of failures as they occur. Client may never see a failure with HA deplyment. But the maintenance activity would be must.
Real time gross settlement systems (RTGS) are specialist funds transfer systems where transfer of money or securities takes place from one bank to another on a "real time" and on "gross" basis. Settlement in "real time" means payment transaction is not subjected to any waiting period.
Disaster recovery (DR) involves a set of policies and procedures to enable the recovery or continuation of vital technology infrastructure and systems following a natural or human-induced disaster.