This type of licensing scheme is nothing
new??”it??™s the same type of licensing model used for most of Microsoft??™s products.
The most cost-effective choice for your organization will be based purely on how
your users access the system. Say, for example, that your company has 1000 users who
295 Chapter 9: Terminal Services
will access Terminal Services. If a one-to-one relationship exists between users and devices
(that is, each user uses one unique device exclusively), then either licensing mode
will do. On the other hand, if those 1000 users share 500 workstations because the users
are split up into shifts, choosing a Per Device license mode cuts your licensing costs
in half, since you would need to purchase only 500 CALs versus the 1000 CALs you
would need if you chose a Per User license mode. Alternatively, if those 1000 users each
accessed Terminal Services using both a workstation and a laptop, you would have to
purchase 2000 CALs in a Per Device license mode as opposed to 1000 CALs in a Per User
license mode. Needless to say, in that situation, going with Per User CALs is much more
cost-effective.
You need to look at how your organization will connect to Terminal Services. Compare
your user base with the number of devices used to access terminal servers. Whichever has
the lower number will typically drive what licensing model best suits your environment.
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