Brian Madden recently published a blog "Is VMware enticing customers with more expensive VDI RDSH which would meet their needs at a lower cost? "
He argues that customers should really do their homework and understand the use cases before abandoning RDSH on VDI not persistent. He also mentioned some of the claims of the document VMware EUC made against RDS. In the comments section, Harry Labana (former CTO for Citrix XenDesktop group) accepts most of the time, adding that the number of VDI and RDS scalability approach (see my previous blog for numbers), so if you can justify the higher cost and the use case you can go for VDI
again, Adam Carter of Microsoft RDS team also blogged demystifying the FUD VMware VDI Microsoft vs. VMware View :. freedom of choice around RDS and stresses that flexibility and use cases are the key to choosing the right delivery model.
the common point between Brian and the blog of Adam is that there are use cases for both RDS and non-persistent VDI desktops. I fully agree and I think the IT empowerment and offering them more flexibility will help solve their problems. If you want to offer your end users a desktop fully managed and locked with the applications now, then there is no better solution than RDS (think call centers, support centers, university laboratories ).
Contrary to what would be VMware you want to believe, you can actually offer a locked desktop via RDS and allow users to customize their desktops with persistent personalization between sessions (think EU-V Citrix and universal profile solution). RDS enables you to deliver more virtual, seamless Windows applications on non-windows devices and tablets which is great for BYO scenario with easy access to their applications without having to run the whole office.
There are many applications in the RDS solution in the VMware document but we will clarify some of the misconceptions most common in this blog.
conflicts Application-to-application are not specific RDS FUD When spreading regarding this subject, one thing that the VMware document you not say here that the conflict from application to application can also occur in a VDI environment. It is not a Citrix or RDS specific problem. You can not run multiple versions of IE natively on the same client device. VMware has this exact same issue with their VDI offering and they are trying to solve this problem by using their streaming solution ThinApp Application. Recommends XenApp server consolidation by applications, which optimizes IT operations and helps eliminate problems faster. With Citrix XenApp, you can also use App-V to troubleshoot application to application compatibility issues. App-V comes as part of the RDS CAL licenses so there is no additional cost involved
A user / session NE lowering the entire server :. As Adam Microsoft describes in his blog - back to Windows Server 08 services running in Session 0, and user sessions executed in isolation from session 1, so there no direct interaction between users and services. In general, it means an application crash in a user session may only affect the user; it will not reduce services or other users of the same because of this isolation server. The isolation between sessions as effectively creates a security barrier between user sessions-with the proper security configuration, the user data is visible only to the user's session where it is used.
RDS does not have broad applications compatibility issues - I will not say that 100% of applications are compatible with RDS, but I would it becomes extremely difficult to find an application that will not run on a terminal server platform. Microsoft and Citrix have worked together for more than 20 years to crush most of the application compatibility issues and jointly published several best practice guides. Citrix AppDNA is the best practical solution for organizations to use to determine the best way to deliver applications (native, hosted, streaming App-V). AppDNA is proven to reduce the risk, time and cost of application migration. VMware does not offer a solution like this and you will need to get a strong fight or to manually configure your applications. Because of the Citrix experience in this area, most major business applications have been verified via the Citrix Ready program to give you greater peace of mind. Microsoft also offers RDS Application Analyzer to determine if an application behavior that would prevent him from running well in a multi-user environment. Citrix XenApp successful over 250,000 users and that number continues to grow, even on the chance of an application may have a compatibility problem, Citrix XenApp VM hosted apps solves these specific instances ensuring IT can deliver all applications to their users
RDS environments can offer the same level of user customization that non-persistent VDI - This is another claim where the VMware paper says only half Of the history. VMware says that unlike RDS based workstations, non-persistent VDI allows users to install applications inside their office. What they do not tell you is that even with non-persistent VDI a user installs an application on the image will lose this application once he or she logs off and the office is reset canceling all changes made to the user. Citrix (profile management solution) and Citrix Ready partners (RES Software, AppSense, etc.) provide the shape and manage personalization tools through unified desktops in VDI and RDS. You as a customer still plenty of options and flexibility in customizing the user in the virtual environment.
recently released XenDesktop VDI 7 offers, RDS, virtual applications and access solutions to remote PC using a single architecture. We as a community can talk all day about how best to deliver lock workstations (RDSH vs non-persistent VDI) XenDesktop7 but you can mix and match the use case to the user and offer the best desktop using a unified service architecture with common protocol, supply and driving the policy. There are cases for all uses non-persistent VDI, persistent VDI and desktop session bases.
I would like to hear more arguments about non-persistent vs RDS. Please add your comments and discuss about it.
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