The Excalibur Technology Preview provides an early glimpse at some of the upcoming improvements to XenApp and XenDesktop. While the unification of XenDesktop and XenApp into a single deployment and management architecture and the added support for the next generation Windows operating systems are undoubtedly the most obvious changes, we’ve made a number of other improvements throughout the product. Among those are improvements to both the Machine Creation Services (MCS) and Provisioning Services (PVS) features.
Provisioning for XenApp Servers via MCS or PVS
One of the benefits of the updated FlexCast Management Architecture is that XenApp farms can now be deployed and managed from within Studio. This also means they can be provisioned using the Machine Creation Services linked-clone delivery model that has been available within XenDesktop for a few releases now. One of the primary benefits of MCS is the ease in which new catalogs of machines (virtual desktops and now virtual XenApp servers) can be created. Updates to the catalog creation wizards in Studio guide you though the initial roll-out of a virtual XenApp farm. The MCS model provides many of the same single image management benefits of Provisioning Services, but works directly on the storage managed by your hypervisor, so there is no need to deal with PXE or build-out a Provisioning Services deployment. However, this capability is limited to the new Excalibur version of XenApp.
PVS streaming for XenApp farms and desktop catalogs is still an option in Excalibur, providing the enhanced image management capabilities and storage IO optimizations beneficial in larger, more complex environments, though management of the Provisioning Services infrastructure remains in a separate management console. Provisioning Services will continue to provide a centralized image library for mixed environments where multiple “sites” or “farms” of XenDesktop and XenApp are used.
READ MORE :
@Citrix Blogs : whats new with provisioning in excalibur
@Ymichalak.free.fr : whats new in citrix excalibur
@jackcobben.nl with PVS
@blog.itvce.com with MCS
While the Excalibur Delivery Agent for Windows Server Machines is extremely similar to concept of Session Hosts in XenApp 6.5, it also offers some notable improvements and benefits:
The Excalibur Delivery Agent for Windows Server Machines is designed from the ground up for dynamic provisioning with Machine Creation Services and Citrix Provisioning Services. Unlike XenApp, the Delivery Agent communicates only with the controllers in the site and does not need to access the site database or license server directly.
Delivery Agents do not need to run the same version or OS as the controllers. This simplifies the process of upgrading sites, and allows Excalibur to support six different Windows operating systems all within a single farm: Server 2008 R2, Server 2012, XP, Vista, 7, and 8.
While the XenApp session host-only mode disabled functionality and offered performance benefits over XenApp controllers, it consisted of the same installed services and same binaries as the controllers. The Excalibur Delivery Agent for Windows Server Machines is lighter weight, and only consists of the components needed for hosting sessions. It does not share any common installed components with the controllers.
SOURCE : What’s new in Excalibur Delivery Agents
HOW TO INSTALL EXCALIBUR TECH PREVIEW
Part 1 : jackcobben.nl with PVS
Part 1 : blog.itvce.com with MCS