Remote Data Mirroring/Data Replication
Remote data mirroring, or remote copy, is the most commonly used mechanism for fast application and data recovery. This inherently implies that a mirrored volume within a disk subsystem is created to provide protection. The main volume being used by the application is considered the primary and the mirrored volume is considered as the secondary. The two main remote copy technologies that are implemented include:
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•Storage
The most commonly known remote copy facilities available today include EMC’s Symmetrix RemoteData Facility (SRDF). IBM eXtended Remote Copy (XRC), IBM’s
Both IBM XRC and Veritas VVR solutions are host based,
Cisco Products and Solutions for Disaster Recovery
As data availability becomes a key differentiator for enterprises, an increasing amount of resources are being spent in ensuring continuous operations. As explained above, dedicated networks are being provisioned to guarantee performance metrics as well as security for backup applications. Intelligent storage networks provide a new dimension to backup and recovery. In addition, remote data replication solutions offer higher degrees of availability and can be scaled to meet the requirements of the enterprise. Cisco Systems delivers
Figure 4
The Cisco MDS 9000 Family of Multilayer Directors and Fabric Switches. From left to right: MDS 9506 Director, MDS 9513 Director, MDS 9509 Director, and the MDS 9216 Fabric Switch
The Cisco MDS 9000 Family of Multilayer Directors and Fabric Switches targets enterprise and service provider storage network environments and delivers higher port density, high switching bandwidth, high performance, multiprotocol and greater reliability. The MDS 9000 Family products also targets heterogeneous storage area networks where the overall storage environment consists of multiple vendors’ products. In those environments, the Cisco MDS 9000 Family products can serve as a centralized system to provide interconnection and advanced services.
Cisco Systems, Inc.
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