Most of the time, ultrathin or zero clients are also light on local storage. Storage serversĬonsidering the likelihood of university IT using ultrathin or zero clients for VDI endpoints, more server-based storage will be needed. With periodic revalidation checks in place, this can help reduce the number of licenses needed for each software title. To solve this problem, licenses/license keys are usually stored on a license server that can be dynamically served to requesting users as they need them. This is not possible while using virtualization technologies as it would require IT to store every different license key, on every single machine with access permissions, for every single software title. When software runs traditionally from the local storage of a machine, a license key is also stored in the local storage of that machine, likely amongst the program files. These are often referred to as VM servers and they must be carefully implemented to be able to support university traffic volumes reliably. Virtual machines must be spun up, hosted, and deployed from a server. Certain other hosted solutions are able to partially absorb CALs. Microsoft's new cloud-hosted entry to the market, WVD is able to achieve a comparatively low price point by removing the cost of CALs and, similar to SCCM and App-V historically, will likely secure a good foothold in higher education software delivery due to affordability. WVD is able to totally absorb the cost of CALs, which are essentially Windows licenses. There are some very limited exceptions to this, the most notable being Windows Virtual Desktop. Like VDA licenses, the number of CALs a university needs to is equal to the maximum number of concurrent sessions they need to run. Source: Comment on >Ĭlient Access Licences or CALs are essentially the VM equivalent of an OS license. Windows VDA is the license rights to access a Windows desktop OS on server.Ĭhris Le Texie, Former Microsoft brand representative. Licensing a Windows desktop OS VM on a server is licensed per accessing device. Generally, the number of licenses a university needs to buy is equal to the maximum number of concurrent sessions they need to run. With most solutions, there is a 1:1 ratio of VDA licenses to VDI seats. With VDI, a VDA is required to access virtual machines. Virtual Delivery Agent licenses & Client Access Licenses Session-Based VDI: An individual session running inside a server OS on either a virtual machine or a physical server.
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