Sep 04, · Essentials cannot be virtualized, uses CPU licensing, and requires no CALS. It caps at 25 users and devices. Standard CAN be virtualized, uses Core-based licensing (so now you have to count the cores and address minimums on that server and license accordingly regardless of # of users), and it requires a CAL for every user or device which has a. Aug 16, · A Windows Server CAL would be for an user using a Microsoft Server Service. This includes ADDS, DNS, DHCP, etc. So if you have 17 users you would need 17 user CALs. Server Standard licensing you have to license all your cores, w/ a minimum of 16 core licenses. So you would be correct there. User vs Device, here you typically license whatever is.
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