What is ROK?

HPE and Microsoft bring together the world's leading server hardware and software innovations, applications, resources, and support.

HPE sells Windows Server licenses in a number of ways. To ensure customers purchase the right HPE ProLiant server with the right Windows Server edition, HPE developed the HPE OEM Windows Server Reseller Option Kit (ROK), that delivers, value pricing, flexible choices, one- stop ordering, and single source support to help you be more productive, achieve more with your investment and keep your business running smoothly.

What is included in HPE ROK?

Essentials Edition


Small companies with basic IT needs purchasing a first server; likely small or no dedicated IT department.
25 users / 50 devices
No server CALs required
1 physical or virtual instance
Must be root of domain
For servers with 1 or 2 processors only

Standard Edition

871148-B21 (16-Core)

SMB's that need advanced features, support for distributed office locations, and require a flexible way to virtualize their environment.
Unlimited users or devices, based on CALs
2 VMs
2 Hyper-V containers
Unlimited Windows Server containers

Datacenter Edition

871153-B21 (16-Core)

Companies of all sizes that have demanding IT workloads, require advanced storage, virtualization and application deployment.
Unlimited users or devices, based on CALs
Unlimited VMs
Unlimited Hyper-V containers
Unlimited Windows Server containers
Storage features including: Storage Replica & Storage Spaces Direct
New Networking Stack
Shielded VMs and Host Guardian Service

Why is CAL attach so important?

With Your Business ever growing and workspace increasing with Windows Server 2016, you must have a Client Access License (CAL) for each User or Device.

This offers you a flexible affordable way to scale your business with Windows Server Standard.