Complete Virtual Platform
Availability: Flexible, Uniform High Availability
A shared IT services platform for a private cloud needs to improve application availability by providing capabilities to protect against planned infrastructure downtime and provide resilience to unplanned downtime across all aspects of the hardware – server, component, storage, network and software. VMware's offering does this with wide ranging capabilities to protect applications from:
Microsoft Exchange is seen as a ‘canary in the coal mine’ when it comes to virtualization—one of the harder use cases. We’ve proven that people’s hesitation is unfounded. Exchange can be virtualized, it works, and it works well.Sue Werner, Systems Engineer, Raymond James Financial
The inherent reliability of VMware ESXi/ESX™ is also a big factor here, ensuring that no new risks are introduced into the environment because of the hypervisor.
VMware High Availability™ (HA) provides cost-effective high availability for any application running in a virtual machine without the cost or complexity of traditional clustering offerings like Microsoft Clustering Services (MSCS). Regardless of the guest operating system or underlying hardware configuration, VMware HA provides protection across your entire virtualized IT, eliminating the need for dedicated stand-by hardware. VMware HA is a more scalable solution than clustering options, making it suitable for an organization’s entire infrastructure.
Watch a technical video on: VMware High Availability and VMware vSphere
VMware Fault Tolerance™ provides zero downtime and zero data loss availability for all virtual machines against x86 hardware failures. Enabling fault tolerance for a specific virtual machine enables that workload to run on two different vSphere hosts simultaneously and allows the virtual machine to run seamlessly in the event of hardware failure on either host. Neither Microsoft nor Citrix has this capability built into its virtualization platform – they both ask customers to purchase a separate third party product to get this type of VM-level fault tolerance. The problem is, beyond the additional cost, that the third party solution is still not available for Hyper-V and for XenServer, the third party solution only supports Windows Server 2003 and Windows Server 2008 virtual machines.