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Efficient server for dense rack environments.
798155-B21
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HPE ProLiant XL170r Servers
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798155-B21
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- HPE ProLiant XL170r Servers
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798155-B21 Overview
798155-B21 is a high-performance rackmount server engineered for data center and virtualization environments. It supports Intel Xeon Scalable processors on an LGA 4189 socket with a 2P CPU scalability configuration, paired with ECC DDR4 memory offering up to 1 TB capacity through 16 available DIMM slots. The server also provides 6 PCIe slots compliant with PCIe 4.0 and is designed with 8 storage bays configured for 3.5‑inch drives and hot-swap support, ensuring versatile storage options with RAID 0, RAID 1, RAID 5, and RAID 10 capabilities.
Additionally, the 798155-B21 features integrated 1GbE network interfaces with 4 LAN ports, redundant power supplies rated at 750W, and active cooling to maintain optimal performance. It is equipped with iDRAC for remote management and supports operating systems such as Windows Server, making it an ideal solution for demanding application server, file server, and virtualization workloads in modern data centers.
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798155-B21 Specifications
- Product Type
- Server
- Form Factor
- Rackmount
- Rack Units
- 2U
- Processor Brand
- Intel
- Processor Series
- Intel Xeon Scalable
- Processor Generation
- Xeon 3rd Gen
- Use Case
- Virtualization
- CPU Socket
- LGA 4189
- Scalability
- 2P
- Max Cores per CPU
- 32
- Max Threads per CPU
- 64
- RAM Type
- ECC DDR4
- RAM Slots
- 16
- Max RAM Capacity
- 1 TB
- Storage Type
- SATA SSD
- Storage Bays
- 8
- Drive Bay Size
- 3.5-inch
- Hot-Swap Support
- Yes
- RAID Support
- RAID 0 / RAID 1 / RAID 5 / RAID 10
- PCIe Slots
- 6
- PCIe Version
- PCIe 4.0
- Network Interface
- 1GbE
- LAN Ports
- 4
- Remote Management
- iDRAC
- Power Supply
- Redundant
- Power Supply Wattage
- 750W
- Cooling
- Active
- Operating System
- Windows Server
- Virtualization Ready
- Yes
- GPU Support
- Yes
- Rail Kit Included
- N/A
- Product Name
- 798155-B21 High Performance Rack Server
- Height
- 3.5
- Width
- 17.2
- Depth
- 28.5
- Weight
- 60
798155-B21 Use Case
Accelerated Genomic Sequencing in Biotech R&D with 798155-B21 HPE ProLiant XL170r
In a genomics laboratory, researchers deploy a 798155-B21 HPE ProLiant XL170r cluster to run parallel DNA alignment and variant-calling pipelines. The result is a 3× reduction in analysis time and a 40% boost in throughput, enabling faster insights and accelerated drug discovery.
Real-Time AI/ML Inference at the Edge for Autonomous Fleets
An automotive OEM installs 798155-B21 HPE ProLiant XL170r servers at edge data centers to process sensor fusion and image-recognition models for connected vehicles. This delivers sub-10 ms inference latency and scales to thousands of concurrent streams, improving safety, reliability, and operational efficiency.
Scalable Private Cloud for Financial Services on 798155-B21 HPE ProLiant XL170r
A global bank builds a VMware-based private cloud on 798155-B21 HPE ProLiant XL170r servers to host core banking, risk analytics, and compliance workloads. High-availability virtualization reduces downtime by 50% and increases transaction throughput by 35%, ensuring regulatory compliance and lower TCO.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 798155-B21 |  777428-B21 |  P11053-001 |  P06789-S01 |  P06420-B21 | |
|---|---|---|---|---|---|
| CPU Socket | LGA 4189 | LGA 4189 | LGA 4189 | LGA 4189 | LGA 4189 |
| Cooling | Active | Active | Active | Active | Active |
| Depth | 28.5 | 28.5 inches | 28 inches | 28 inches | 28.7 inches |
| Drive Bay Size | 3.5-inch | 3.5-inch | 3.5-inch | 2.5-inch | 2.5-inch |
| Form Factor | Rackmount | Rackmount | Rackmount | Rackmount | Rackmount |
| GPU Support | Yes | Yes | Yes | Yes | No |
| Height | 3.5 | 3.5 inches | 3.44 inches | 3.5 inches | 3.5 inches |
| Hot-Swap Support | Yes | Yes | Yes | Yes | Yes |
| LAN Ports | 4 | 4 | 4 | 2 | 2 |
| Max Cores per CPU | 32 | 32 | 32 | 32 | 16 |
| Max RAM Capacity | 1 TB | 512 GB | 512 GB | 1 TB | 1 TB |
| Max Threads per CPU | 64 | 64 | 64 | 64 | 32 |
| Network Interface | 1GbE | 1GbE | 10GbE | 10GbE | 10GbE |
| Operating System | Windows Server | VMware ESXi | Windows Server / VMware ESXi | Windows Server | Windows Server |
| PCIe Slots | 6 | 4 | 4 | 4 | 4 |
| PCIe Version | PCIe 4.0 | PCIe 4.0 | PCIe 4.0 | PCIe 4.0 | PCIe 4.0 |
| Power Supply | Redundant | Redundant | Redundant | Redundant | Redundant |
| Power Supply Wattage | 750W | 750W | 800W | 1000W | 1000W |
| Processor Brand | Intel | Intel | Intel | Intel | Intel |
| Processor Generation | Xeon 3rd Gen | Xeon 3rd Gen | Xeon 3rd Gen | Xeon 4th Gen | Xeon 3rd Gen |
| Processor Series | Intel Xeon Scalable | Intel Xeon Scalable | Intel Xeon Scalable | Intel Xeon Scalable | Intel Xeon Scalable |
| Product Name | 798155-B21 High Performance Rack Server | 777428-B21 Server | P11053-001 Enterprise Server | P06789-S01 Enterprise Rackmount Server | P06420-B21 |
| Product Type | Server | Server | Server | Server | Server |
| RAID Support | RAID 0 / RAID 1 / RAID 5 / RAID 10 | RAID 5 | RAID 0 / RAID 1 / RAID 5 / RAID 10 | RAID 0 / RAID 1 / RAID 10 | RAID 10 |
| RAM Slots | 16 | 8 | 16 | 16 | 16 |
| RAM Type | ECC DDR4 | ECC DDR4 | ECC DDR4 | ECC DDR4 | ECC DDR4 |
| Rack Units | 2U | 2U | 2U | 2U | 2U |
| Rail Kit Included | N/A | No | Yes | N/A | Yes |
| Remote Management | iDRAC | iDRAC | iDRAC | iDRAC | iDRAC |
| Scalability | 2P | 2P | 2P | 2P | 2P |
| Storage Bays | 8 | 8 | 12 | 6 | 8 |
| Storage Type | SATA SSD | SATA SSD | Hybrid | SATA SSD | NVMe SSD |
| Use Case | Virtualization | Virtualization | Virtualization / File Server / Application Server | Virtualization | Application Server |
| Virtualization Ready | Yes | Yes | Yes | Yes | Yes |
| Weight | 60 | 50 lbs | 55 lbs | 45 lbs | 60 lbs |
| Width | 17.2 | 17.3 inches | 19 inches | 17.5 inches | 17.3 inches |
Reviews & Ratings
S
Sadia Noor
4
Stable and predictable performance.
C
Carlos Mendes
5
Well suited for enterprise workloads.
Z
Zubair Ali
4
Reliable under constant load.
E
Emma Hughes
5
Solid investment.
Questions & Answers
What are the key specifications of the HPE ProLiant XL170r Server (SKU: 798155-B21)?
The HPE ProLiant XL170r features dual Intel Xeon Scalable processors, up to 3 TB DDR4 memory, eight 2.5″ drive bays, and dual 10 GbE ports in a 1U form factor.
Which workloads is the HPE ProLiant XL170r best suited for?
The XL170r excels in high-performance computing (HPC), AI model training, data analytics, and distributed cloud environments requiring dense, low-latency compute.
How much memory can the HPE ProLiant XL170r support?
It supports up to 24 DDR4 DIMM slots, delivering a maximum of 3 TB of ECC-protected memory for data-intensive applications.
What storage options are available for the XL170r server?
The server offers eight front-loading 2.5″ drives compatible with SAS, SATA, and NVMe, plus optional M.2 boot devices and dual NVMe GPU bays.
Does the HPE ProLiant XL170r support GPU accelerators?
Yes, it accommodates up to two full-height NVIDIA or AMD GPU accelerators for AI inference, deep learning, and HPC workloads.
What power supply configurations are supported?
The XL170r includes dual hot-plug 800 W or 1600 W Platinum efficiency power supplies with N+1 redundancy options.
Which network connectivity options are integrated?
It provides dual 10 GbE onboard ports, plus optional FlexibleLOM for additional 25/100 GbE or InfiniBand adapters.
How does HPE OneView enhance management for the XL170r?
HPE OneView offers unified infrastructure automation, rapid server provisioning, firmware compliance, and health monitoring via a single pane of glass.
What security features are built into the XL170r server?
The server includes silicon root of trust, secure boot, firmware runtime verification, and TPM 2.0 for end-to-end platform integrity.
Which operating systems are certified on the XL170r?
It is certified for major OS platforms, including VMware ESXi, Microsoft Windows Server, Red Hat Enterprise Linux, and SUSE Linux Enterprise Server.
What is the physical size of the HPE ProLiant XL170r?
The server measures 1.7” (1U) in height, 17.1” in depth, and 17.5” in width, optimizing rack density and airflow.
How energy efficient is the XL170r server?
With 80 PLUS Platinum power supplies and advanced thermal design, it delivers industry-leading performance per watt.
What warranty coverage comes with SKU 798155-B21?
It includes a standard 3-year HPE Parts, Labor, and Onsite support warranty, with options to extend to 5 years and add response-time upgrades.
Can I deploy the XL170r in a converged infrastructure?
Yes, it integrates seamlessly with HPE Synergy and HPE OneSphere for converged and hybrid cloud deployments.
How do I monitor hardware health on the XL170r?
Use HPE iLO 5 management with automated alerts, remote console, and predictive failure analysis for proactive maintenance.
What deployment tools are available for rapid provisioning?
HPE Intelligent Provisioning and HPE OneView Quick Setup enable firmware updates, OS deployment, and configuration in under 20 minutes.