Today, businesses with access to real-time online transactional data have a competitive advantage. To gain the most potential from this data it must be current and available at any given time. The counter to this advantage is that the inability to access or update current data carries a significant business cost, possibly measured in many thousands of dollars per second.
“95% of organizations have developed disaster-recovery plans, yet 23% never test those plans. Spicework’s findings indicate this oversight may be the cause of increasing service outages across numerous industries.” These requirements necessitate an IT infrastructure that is continuously available.
Business continuity (also referred to as business reliance or business continuance) encompasses those activities that an enterprise performs to maintain consistency and recoverability of its data, operations, and services. Application availability depends upon the ability of IT services to survive any fault, whether it is a server failure, a network fault, or a data center disaster. Data availability depends on the existence of up-to-date backup data copies. Data replication is an enabling technology for achieving high or continuous availability for application services and the timely backup of important data.
Figure 1 states the numerous costs per hour of downtime by industry (in $US): healthcare loses $636K, retail $1.1M, financial $1.5M, manufacturing $1.6M, and Communications/Media/Entertainment $2M, with the average at $1.4M.
(Source: Network Computing, the Meta Group, Contingency Planning Research.)
HPE Shadowbase solutions offer a range of data replication capabilities to meet every application availability and data recoverability need. The overall return on investment in deploying a Shadowbase business continuity solution is positive, by preventing prolonged periods of downtime or data loss which can cost the business thousands or even millions of dollars.
HPE Shadowbase data replication solutions support low-latency, uni-directional, and bi-directional data replication between homogeneous and heterogeneous systems and databases with scalability, selectivity, and sophisticated data transformation and mapping facilities. Shadowbase data replication software provides a business continuity solution to meet any business requirement:
As shown in the Business Continuity Continuum depicted in Figure 2, HPE Shadowbase solutions support a range of Recovery Time Objectives (RTO) and Recovery Point Objectives (RPO). Availability level and amount of data loss improve as you move from the lower left to the upper right: as you move horizontally from an active/passive through sizzling-hot-takeover to an active/active architecture and vertically from asynchronous to synchronous data replication technology. RTO’s of minutes to seconds is considered “High Availability” while RTO’s of seconds to sub-seconds is considered “Continuous Availability.”
HPE Shadowbase software provides this range of BC solutions by using data replication technology, as shown in Figure 3. The purpose of data replication is to keep a target database synchronized with the changes that an application is making against a source database, in real-time. (The source database is hosted on the source node and the target database is hosted on the target node.) As the application makes changes to the source database, the HPE Shadowbase data replication engine captures the data changes and sends them to a target system, where they are applied to the target database. In this way, the source and target databases are kept synchronized.
**Note: Shadowbase ZDL architectures are future synchronous technologies, specifications are subject to change without notice and delivery dates are not guaranteed…