New features of Windows Server 2008 Failover Clustering such as cross subnet failover and use of high-latency networks make it possible for users to deploy geographically dispersed clusters. SteelEye DataKeeper unlocks the power of Windows Server 2008 Failover Clustering, allowing administrators to take advantage of these great new features to support high availability and disaster recovery configurations.With these new features of WSFC making geographically dispersed clusters easier to implement and more robust, there is still one key ingredient that is needed in order to fully enable this feature - wide-area data replication. SteelEye DataKeeper is one such solution and provides the optimal balance of ease of use, features and price-performance to facilitate geographically dispersed clusters for Exchange, SQL, SharePoint, Hyper-V and other critical applications.The most basic configuration consists of a two node Microsoft failover cluster, with one node in the primary data center and the second node in a different data center at the other side of a WAN link. SteelEye DataKeeper replicates the volume resource(s) defined on the primary server to the secondary server. The volume resource can be a local attached disk, or it can be an iSCSI or fiber channel SAN attached volume.Changes that occur to the volume(s) on the disaster recovery server are tracked in the bitmap and are replicated back to the primary server once it becomes available again.
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