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Live migration is an important feature for customers to handle unplanned outages, as Sun and VMware have demonstrated through inclusion of live migration capabilities in their hypervisors. How will Hyper-V meet customers' migration needs without live migration?
O'Rourke: Virtualization and high availability go hand-in-hand. If you're virtualizing today without high availability, then you should reevaluate that strategy. Windows Server 2008 Enterprise and Datacenter editions provide Hyper-V and integrated failover clustering at no additional charge. In the case of unplanned downtime, VMotion can't live migrate because there is no warning. Instead you must have VMware HA configured, and the best it can do is restart the affected virtual machines on other nodes, which is the same as what is provided with Windows Server 2008 Hyper-V and integrated Failover Clustering. And nearly three weeks ago at TechEd North America, Bob Muglia announced that live migration will be in the next version of Hyper-V.
Enterprises are widely adopting open source technologies in order to give their customers access to bleeding-edge features and functionalities. How do you see the proprietary Hyper-V competing with open source Xen-based hypervisors from Citrix and Sun?
O'Rourke: IDC, Gartner, and others also indicate that enterprises are widely adopting proprietary software. We know our customers drive innovation using a mix of open source and proprietary software. As it relates to Windows Server 2008 Hyper-V, we expect IT pros, admins, developers, and others who are familiar and know Windows will be excited by Hyper-V. It's the Windows they know. And for those not familiar with Windows, they know that we have done extensive work with Citrix (initially XenSource) and Novell to ensure hypervisor compatibility and OS support on each others' hypervisors.
Customers running multiple hypervisors (and many will) will benefit from this work, as well as our open interfaces, standards work, and the fact that Microsoft's Virtual Hard Drive image format and Hypercall APIs are available under Open Specification Promise.
Read full interview at source
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