Is Server Virtualization The New Clustering?

Powerful Solutions For Non-Transaction Based Apps

For non-transaction based apps, look at the increasingly sophisticated  third-party monitoring solutions available. See the table below. For example, Lyonesse Software's Double-Take, Steeleye's LifeKeeper, Symantec's Veritas Application Director, and Cassatt's Active Response can monitor both physical and virtual applications running on virtual servers, and notify IT staff when a host or application fails, so that a new virtual instance can be quickly brought online.

Lyonesse's Double-Take can monitor the running state of two servers to enable failovers.Lyonesse's Double-Take can monitor the running state of two servers to enable failovers.

Vendors and Products




Active Response

Monitor, pool, and allocate physical and VM resources


Automated provisioning

Lyonesse Software (


Real-time data replication and failover

Windows Server 2008 Hyper-V

Virtualization for 64-bit servers

Cloud Manager

Automated, template-based provisioning


Hardware appliance for one-click failovers


Data protection, disaster recovery and high availability for Windows, Linux, and VMware

Volume Replicator

Volume replication over IP networks

Veritas Application Director

Monitor physical and VM workloads

Virsto One

Virtual storage management

vCloud Director

Lightweight app server and load balancing


Virtual datacenter creation


High-available clustering for Hyper-V

Virtualization and clustering are becoming more interrelated and complementary solutions for IT managers. While the two technologies grew out of different needs and have had different infrastructures, they are now merging and providing a powerful tool for managing more complex workloads in the data center. This is making both more appealing to smaller-sized businesses. "If you can afford the longer failover times for some of your applications, you can get a better level of resiliency and business continuity from virtualization," says Oestreich.

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