Intel® Virtual RAID on CPU

Intel® Virtual RAID on CPU (VROC)

The Intel® Virtual RAID on CPU, commonly referred to as VROC, is a sophisticated software‑defined RAID solution that leverages the processing power of Intel Xeon Scalable processors. By integrating directly into the CPU architecture, VROC eliminates the need for traditional hardware RAID controllers while delivering comparable performance and reliability.

Core Architecture

VROC operates as a kernel‑level driver that interfaces with NVMe SSDs attached to the PCIe lanes of the processor. The driver aggregates raw NVMe devices into logical volumes, applying RAID levels 0 (striping), 1 (mirroring), and 10 (striped mirrors). Because the logic resides in software, it can be updated independently of hardware, allowing rapid feature enhancements.

Supported Operating Systems

The solution is engineered for enterprise environments and supports a broad spectrum of operating systems:

• Windows* 2016, 2012 R2, 10, and 7 SP2
• Red Hat Enterprise Linux* 7.3
• SUSE Linux Enterprise* 12 SP3

These platforms benefit from native VROC drivers that integrate seamlessly with the OS storage stack, ensuring minimal overhead and maximum throughput.

RAID Levels & Device Capacity

VROC supports three primary RAID configurations:

• RAID 0 – Striping across up to 24 devices, providing high bandwidth for read/write operations.
• RAID 1 – Mirroring, offering fault tolerance by duplicating data on paired drives.
• RAID 10 – Combines striping and mirroring for a balance of performance and redundancy.

The maximum number of devices that can be aggregated into a single VROC volume is 24, enabling large-scale storage arrays without additional controller hardware.

Hardware Key & Licensing

To activate VROC on a given system, an Intel VROC Standard Hardware Key must be installed. This key is a small module that authenticates the driver against the processor’s firmware, ensuring compliance with licensing terms and preventing unauthorized use.

Launch & Market Position

Released in Q2 2017, VROC targets the mainstream server market (SRV segment). It is positioned as a cost-effective alternative to traditional RAID cards, reducing both hardware footprint and power consumption while maintaining enterprise‑grade reliability.

Export Control & Compliance

The product falls under the EAST99 classification for export control, indicating no special licensing requirements for most countries. Its Harmonized System code is 84733080, categorizing it as a computer peripheral device.

Key Benefits

• Zero Latency – Direct CPU access to NVMe devices eliminates the extra I/O path introduced by hardware controllers.
• Scalability – Supports up to 24 drives per array, allowing large storage pools without additional chassis or cards.
• Software Flexibility – RAID configuration can be changed on the fly via command‑line tools or management APIs.
• Reduced Footprint – No physical controller card required, freeing PCIe lanes for other workloads.
• Energy Efficiency – Eliminates power draw from a separate RAID controller, contributing to lower overall system consumption.

Management & Integration

VROC is fully compatible with Intel’s Data Center Manager (DCM) and other enterprise management suites. Administrators can monitor health metrics, perform firmware updates, and reconfigure RAID arrays through familiar interfaces.

Use Cases

• High‑Performance Computing (HPC) – Rapid data access for simulations and analytics workloads.
• Virtualization Platforms – Efficient storage pools for hypervisors like VMware vSphere or Microsoft Hyper‑V.
• Database Servers – Low‑latency, high‑throughput storage for OLTP systems such as SQL Server or Oracle.
• Enterprise File Services – Reliable mirroring and striping for shared file environments.

Future Outlook

Intel continues to enhance VROC with new features, including support for additional RAID levels, improved resiliency mechanisms, and tighter integration with emerging storage technologies such as NVMe over Fabrics. As data center demands grow, VROC remains a pivotal component in delivering scalable, high‑performance storage solutions.

Conclusion

The Intel® Virtual RAID on CPU represents a paradigm shift in server storage architecture. By harnessing the power of modern CPUs and NVMe SSDs, it delivers enterprise‑grade RAID functionality without the complexity or cost of traditional hardware controllers. Its broad OS support, extensive device capacity, and software flexibility make it an ideal choice for organizations seeking to optimize performance while simplifying infrastructure.