OEM‑specific (Unisys) HAL drivers (UNICACPI.SYS, CMPSMP.SYS, ES7000 CIM modules) required

Question

Routing Note Block

—-

Routing Recommendation: Please route this case to Commercial Legacy Support → OEM HAL Engineering for evaluation of archived HAL/ACPI components required for Unisys ES7000/one systems.

Reason for Routing: Customer requires OEM‑specific HAL drivers (UNICACPI.SYS, CMPSMP.SYS, ES7000 CIM modules) originally distributed via Datacenter OEM channels. These components are mandatory for NUMA topology enumeration and CMP (Cellular Multiprocessing) coherency on ES7000/one Dual‑Cell systems under Windows Server 2008 R2 Datacenter.

Current Blocker: Windows Server 2008 R2 boots only in reduced ACPI mode without OEM HAL extensions. CMP/NUMA functionality cannot initialize. Drivers not available through public download or standard Microsoft support channels.

Customer Environment:

• Unisys ES7000/one (Plateau 3.x, RTC‑capable)

• Dual‑Cell CMP, Single System Image

• 8 × Xeon MP 7140M (Dual Core)

• Lab/archival use, non‑production, controlled environment

Action Requested:

Locate and provide archived OEM HAL/ACPI packages, or advise on availability/next steps per Legacy Engineering procedures.

Customer contact details:

Markus Kaltenegger

(Personal information was removed by Moderator)

Answer 1

Hello Markus Kaltenegger,

Thank you for the detailed technical background and for clearly explaining your environment.

Based on the information available, the behavior you are seeing is expected for this platform.

The Unisys ES7000 / ES7000‑one systems rely on Unisys‑specific OEM HAL and ACPI extensions (such as UNICACPI.SYS, CMPSMP.SYS, and ES7000 CIM modules) to fully expose CMP (Cellular Multiprocessing) and NUMA topology to Windows. These components are not part of the standard Microsoft Windows distribution and were historically provided only by Unisys as OEM‑specific software, bundled with Unisys installation media or delivered through Unisys enterprise support.

When Windows Server 2008 R2 Datacenter is installed without these OEM HAL components, Windows falls back to the generic ACPI HAL, which allows the system to boot but does not initialize CMP/NUMA, resulting in reduced processor and memory visibility. This matches the reduced‑functionality state you described.

Regarding availability:

• These Unisys OEM HAL/ACPI drivers are not publicly available, and
• They are no longer distributed or supported by Microsoft.
• Microsoft does not maintain downloadable archives of OEM‑exclusive HAL drivers from legacy platforms.
• As a result, Microsoft support is unable to provide or re‑issue these files.

Next steps / options:

Contact Unisys directly Only Unisys (or an authorized Unisys legacy support partner) may still have access to archived ES7000 OEM HAL packages.

Accept limited functionality Continue operating in generic ACPI mode for archival or lab purposes, with the understanding that CMP/NUMA capabilities will not be available.

Platform modernization If full NUMA/CMP behavior is required, migration to supported hardware and operating systems is the only viable long‑term path.

I understand this is a legacy, non‑production environment and appreciate the effort you’ve taken to preserve it. Unfortunately, due to the OEM‑exclusive and end‑of‑support nature of these components, there is no supported Microsoft download or recovery path for the Unisys ES7000 HAL drivers today.

If you found this answer helpful, please click "Accept Answer" to share the love with everyone! 💖😊🌸✨

Thank you again for your patience and support!

Ivy Bui

Answer 2

The availability or distribution process for OEM‑specific Unisys ES7000 HAL/ACPI components such as UNICACPI.SYS, CMPSMP.SYS, and ES7000 CIM modules is not documented in the provided context. The context only covers the general Windows Hardware Abstraction Layer (HAL) library and some hotfixes that update Hal.dll for specific Windows Server versions and platforms, but does not mention OEM HAL extension packages or any legacy engineering retrieval process for such OEM‑distributed binaries.

---

References:

• Windows kernel-mode HAL library
• A fix is available for three issues in the x2APIC mode in x64-based versions of Windows Server 2008 R2
• A hotfix is available that corrects an issue in the memory allocation logic of the Itanium-based version of Windows Server 2008
• Performance is slow on a multiprocessor computer that is running Windows Server 2008 or Windows Vista