Koopgids
SQL Server — Server+CAL vs. Per-kern
Kies tussen de twee licentiemodellen van SQL Server met een duidelijke break-evenberekening en praktijkvoorbeelden.
De twee modellen
Microsoft verkoopt SQL Server Standard op twee manieren: Serverlicentie + Gebruikers-/Apparaat-CAL's, of Per-kern-licenties. Enterprise-editie is uitsluitend beschikbaar als Per-kern.
Per-kern wordt verkocht in pakketten van 2 kernen, met een minimum van 4 kernen per processor. U moet alle fysieke kernen op de machine licenseren, niet alleen de kernen die SQL gebruikt.
Wanneer Server+CAL voordeliger is
Server+CAL is goedkoper wanneer het aantal gebruikers bekend, beperkt en klein is. Interne applicaties, ERP-backends, BI-tools die worden gebruikt door een afgebakend financieel of operationeel team.
Als vuistregel geldt: bij minder dan ~50 benoemde gebruikers op Standard-editie is Server+CAL de goedkoopste route.
Wanneer Per-kern voordeliger is (en wanneer verplicht)
Per-kern is verplicht wanneer de werkbelasting internetgericht is, anoniem toegankelijk is of wordt benaderd door onbekende of zeer grote gebruikersgroepen. Publieke webapplicaties, klantenportalen, alles met anoniem verkeer.
Per-kern is ook voordeliger bij kleine tot middelgrote kernaantallen met veel gebruikers — bij meer dan ~50 gebruikers op een server met 4–8 kernen bereikt Per-kern het break-evenpunt.
Praktijkvoorbeeld
Middelgroot bedrijf met een interne HR-applicatie: 8-kern-server, 40 benoemde HR-gebruikers. Server+CAL is de voor de hand liggende keuze — 1 serverlicentie + 40 CAL's.
Hetzelfde bedrijf voegt een publiek sollicitantenportaal toe op dezelfde database — dat verkeer is anoniem, waardoor Per-kern-licenties nu verplicht zijn voor die werkbelasting.
Aanbevolen licenties
SQL Server 2022 Standard
Perpetual · Server + CAL or Per-Core
Mainstream SQL Server 2022 for departmental and small-business workloads.
SQL Server 2022 Enterprise
Perpetual · Per-Core
Enterprise SQL 2022 — unlimited scale, full HA, advanced analytics.
SQL Server 2022 User CAL — 5-pack
5 User CALs · SQL 2022
5 SQL Server 2022 User CALs (Server+CAL licensing).
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