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Business Continuity: Symantec Intelligent Application Recovery Solutions Guide

Symantec

Business continuity and disaster recovery (BC/DR) refers to the capability to restore normal (or near-normal) business operations, from a critical business application perspective, after the occurrence of a disaster that interrupts business operations. It requires the ability to bring up mission-critical applications and the data these applications depend on and make them available to users as quickly as business requirements dictate. In cases where downtime is costly, the process will likely involve automation. In other cases, manual processes may be appropriate. For mission-critical applications that demand minimal downtime, the disaster recovery process must be highly automated and resilient—such applications require an intelligent application recovery infrastructure. This document will describe the clustering and replication technologies offered by
Symantec that, when used together, deliver intelligent application recovery as part of an overall BC/DR infrastructure. This document also offers guidelines and best practices around intelligent application recovery to ensure the right architecture is matched to the business requirements at hand.
Disaster recovery, in the broad sense, encompasses much more than just recovery of Information technology (IT) systems and services (for example personnel relocation, power and cooling, etc.); however, in the context of this paper, disaster recovery and intelligent application recovery more specifically will be limited to recovery of mission-critical applications. Symantec’s intelligent application recovery solutions are based in large part on the flexible architecture of Veritas Cluster Server. The same architecture that works in a simple two-node cluster can be easily extended to:
• A single cluster spanning two or more locations where the data at each location is a mirror of
the storage at the primary location
• A single cluster spanning two or more locations where the primary storage is replicated to
alternate locations
• Up to four clusters, with a single cluster at each location where the primary storage is
replicated to the alternate locations

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