Two new licensing options for Windows Vista enterprise customers who want to take advantage of emerging scenarios for large datacentres are on offer.
The first gives enterprise users the ability to run the Windows Vista Enterprise client on a diskless computer, says Scott Woodgate, director in the Microsoft Windows product group (and an expatriate New Zealander now working in Redmond). The second option, called the Vista Enterprise Centralised Desktop, for the first time lets users run a client version of Windows on servers in a datacentre so the OS can run locally via virtual machines.
A diskless PC has no hard drive; instead, the hard drive is stored on the network and an image of the OS is streamed from there into the memory and CPU of the computer, Woodgate says.
Companies interested in protecting sensitive data, such as financial services companies and government customers, have expressed interest in running Vista on diskless PCs for security reasons. However, it is an emerging scenario for datacentres, and so for now will only affect a small number of customers, he says. “The target audience is early adopters,” Woodgate says.
To run Windows Vista Enterprise on diskless PCs, customers must use third-party diskless boot software from companies such as Citrix and other Microsoft partners. This software enables the PC to find a copy of Windows on the network and to stream that software back onto the local machine, Woodgate says.
Vista Enterprise Centralised Desktop allows customers to take Windows Vista Enterprise client software and install it on a virtual machine on a server so it can be accessed from a thin or rich client. This licensing scenario is also the first time customers will be able to run Windows client software on servers, Woodgate says.
The centralised desktop option provides a cost-effective option for companies such as brokerage firms that have trading brokers viewing several computer monitors at once that are all attached to one PC. This way, a business can run one copy of Windows Vista Enterprise on a server and access the OS in multiple virtual machines, Woodgate says.
The diskless PC option is available for no extra charge for customers that have already licensed Windows Vista Enterprise, says Mike Burk, a Microsoft Windows product manager.
The Vista Enterprise Centralised Desktop licence will be available for customers that have Microsoft’s Software Assurance subscription service for an additional fee beginning in July. Microsoft is not disclosing how much more customers will pay for the licence, as fees for Software Assurance vary per customer, Burk says.