To deal with these limitations, XenApp/XenDesktop 7.12 not only reintroduced, but also improved the LHC. Assigned desktops that are turned off will not start, risking a shortage of available desktops. Users with leases not yet synchronized before the DB outage will be unable to connect.No connections possible to pooled VDI’s, users who have not been assigned a desktop are unable to log in.In case the controller receives a connection request from Storefront and it detects an unavailable database, it would try to find the connection information for that user/resource in the XML files.Ĭonnection leasing has quite some limitations during an outage of the DB: In short, it creates XML files containing user, client and resource information, locally stored and synchronized between DDC’s. Prior to XenApp/XenDesktop 7.12, in addition to database mirroring, the Connection Leasing feature would offer a backup solution in case of site database failure. Every XenApp server saved a copy of the datastore database in a locally stored MDB-file. XenApp 6.5 and earlier offered protection from datastore failure by using a Local Host Cache (LHC). XA/XD 7.x also supports a Configuration Logging Database. Secure Ticket Authority: for secured external connectionsīoth the IMA Datastore and the Site Database allow centralized storage of the configuration data.Configuration and policy management (direct connection with the site database).Communication with WebInterface/Storefront ( XML service).Load management, replacing the Zone Data Collector (ZDC).This means that the DDC will consolidate following backend roles found in the IMA architecture:
Applications and desktops are hosted on separate machines, the workers, where the Virtual Delivery Agent ( VDA) is installed. The Flexcast Management Architecture ( FMA) used by XA/XD 7.x on the other hand consolidates all brokering functionalities to the Desktop Delivery Controller ( DDC). The Independent Management Architecture ( IMA) used by XenApp 6.5 and earlier versions is a mesh architecture. FILLER TEXTĭelivery Groups, Application groups and Tags Because some features have been rebranded or have gone through some design changes and improvements, this blog article may assist you in finding the XenApp 6.5 feature you are looking for in XenApp & XenDesktop 7.īelow you can find a summary of all important XenApp 6.5 features and how they translate to the feature set of XenApp & XenDesktop 7. In earlier 7.x versions, some 6.5/IMA features were not available, but rest assured, they were added throughout new releases. This also means moving from the IMA architecture to FMA. XenApp 6.5 has reached end of maintenance and with the end of life date only a few months away, migrating your existing 6.5 environment(s) to XenApp & XenDesktop 7 is highly recommended.
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