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.
Vendors and Products
Monitor, pool, and allocate physical and VM resources
Lyonesse Software (lyonware.co.uk)
Real-time data replication and failover
Windows Server 2008 Hyper-V
Virtualization for 64-bit servers
Automated, template-based provisioning
Hardware appliance for one-click failovers
Data protection, disaster recovery and high availability for Windows, Linux, and VMware
Volume replication over IP networks
Veritas Application Director
Monitor physical and VM workloads
Virtual storage management
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.