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High density server ideal for scale out storage.
799581-B22
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HPE Apollo 4520 Servers
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799581-B22 Overview
799581-B22 is a high-performance Rackmount server designed for data center environments, featuring support for Intel Xeon Scalable processors with an LGA 4189 socket and a dual-processor (2P) scalability configuration. It comes equipped with ECC DDR4 memory in 16 slots supporting up to 1 TB, multiple expansion slots, and eight 2.5-inch storage bays with RAID 10 support, ensuring robust data throughput and redundancy.
This server is built for mission-critical applications such as virtualization, file serving, and application hosting. It offers 10GbE network interfaces with four LAN ports, redundant 1000W power supplies, active cooling, and integrated iDRAC remote management capabilities while natively supporting VMware ESXi, making it ideal for centralized data centers and enterprise-level operations.
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799581-B22 Specifications
- Width
- 17.2 inches
- Depth
- 28 inches
- Height
- 3.5 inches
- Weight
- 45 lbs
- Form Factor
- Rackmount
- PCIe Version
- PCIe 4.0
- RAID Support
- RAID 10
- CPU Socket
- LGA 4189
- Product Type
- Server
- Rack Units
- 2U
- Processor Brand
- Intel
- Processor Series
- Intel Xeon Scalable
- Processor Generation
- Xeon 4th Gen
- Use Case
- Virtualization
- Scalability
- 2P
- Max Cores per CPU
- 32
- Max Threads per CPU
- 64
- RAM Type
- ECC DDR4
- RAM Slots
- 16
- Storage Bays
- 8
- Hot-Swap Support
- Yes
- PCIe Slots
- 4
- Network Interface
- 10GbE
- Remote Management
- iDRAC
- Power Supply
- Redundant
- Cooling
- Active
- Virtualization Ready
- Yes
- GPU Support
- Yes
- Drive Bay Size
- 2.5-inch
- Operating System
- VMware ESXi
- Rail Kit Included
- Yes
- Max RAM Capacity
- 1 TB
- Power Supply Wattage
- 1000W
- LAN Ports
- 4
- Storage Type
- NVMe SSD
- Product Name
- 799581-B22 High Performance Rackmount Server
799581-B22 Use Case
High-Performance Computing (HPC) for Seismic Data Simulation
In oil and gas exploration, teams leverage the 799581-B22 HPE Apollo 4520 Servers to process petabytes of seismic data with 24 NVMe drives and RoCE networking. This deployment accelerates finite element analysis by up to 2×, reduces time-to-insight, and lowers total cost of ownership by 30% per PFLOP.
Hyperscale Object Storage for Cloud Service Providers
Cloud platforms deploy 799581-B22 HPE Apollo 4520 Servers as Ceph or OpenStack Swift nodes, offering 33.6 TB of NVMe density per chassis and end-to-end encryption. The result is sub-millisecond latency at petabyte scale, 5× higher IOPS efficiency, and seamless autoscaling without performance degradation.
Real-Time Big Data Analytics in Financial Trading
Financial firms implement 799581-B22 HPE Apollo 4520 Servers to power in-memory Spark and Hadoop clusters for market-feed analysis. With dual Intel CPUs and high-density NVMe storage, organizations achieve sub-second query response, tighten risk controls, and cut analytic infrastructure costs by 25%.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 799581-B22 |  847077-B21 |  845627-B21 |  798152-B21 |  867158-B21 | |
|---|---|---|---|---|---|
| CPU Socket | LGA 4189 | LGA 4189 | LGA 4189 | LGA 4189 | LGA 4189 |
| Cooling | Active | Active | Active | Active | Active |
| Depth | 28 inches | 28 inches | 28 inches | 30 inches | 28.0 inches |
| Drive Bay Size | 2.5-inch | 3.5-inch | Mixed | 2.5-inch | 3.5-inch |
| Form Factor | Rackmount | Rackmount | Rackmount | Rackmount | Rackmount |
| GPU Support | Yes | No | Yes | Yes | No |
| Height | 3.5 inches | 3.5 inches | 3.5 inches | 3 inches | 3.5 inches |
| Hot-Swap Support | Yes | Yes | Yes | Yes | Yes |
| LAN Ports | 4 | 4 | 2 | 2 | 2 |
| Max Cores per CPU | 32 | 32 | 32 | 32 | 32 |
| Max RAM Capacity | 1 TB | 1 TB | 1 TB | 512 GB | 1 TB |
| Max Threads per CPU | 64 | 64 | 64 | 64 | 64 |
| Network Interface | 10GbE | 10GbE | 10GbE | 10GbE | 10GbE |
| Operating System | VMware ESXi | Windows Server | VMware ESXi | Windows Server / VMware ESXi / Ubuntu / RHEL / SUSE / CentOS | VMware ESXi |
| PCIe Slots | 4 | 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 | 1000W | 750W | 1000W | 750W | 800W |
| Processor Brand | Intel | Intel | Intel | Intel | Intel |
| Processor Generation | Xeon 4th Gen | Xeon 3rd Gen | Xeon 3rd Gen | Xeon 3rd Gen | Xeon 3rd Gen |
| Processor Series | Intel Xeon Scalable | Intel Xeon Scalable | Intel Xeon Scalable | Intel Xeon Scalable | Intel Xeon Scalable |
| Product Name | 799581-B22 High Performance Rackmount Server | Dell Rackmount Server 847077-B21 | 845627-B21 High Performance Enterprise Server | 798152-B21 Enterprise Rack Server | 867158-B21 |
| Product Type | Server | Server | Server | Server | Server |
| RAID Support | RAID 10 | RAID 10 | RAID 10 | RAID 10 | RAID 5 |
| RAM Slots | 16 | 16 | 16 | 16 | 16 |
| RAM Type | ECC DDR4 | ECC DDR4 | ECC DDR4 | ECC DDR4 | ECC DDR4 |
| Rack Units | 2U | 2U | 2U | 3U | 2U |
| Rail Kit Included | Yes | Yes | Yes | Yes | N/A |
| Remote Management | iDRAC | iDRAC | iDRAC | iDRAC | iDRAC |
| Scalability | 2P | 2P | 2P | 2P | 2P |
| Storage Bays | 8 | 8 | 8 | 8 | 8 |
| Storage Type | NVMe SSD | Hybrid | Hybrid | SATA SSD | SATA HDD |
| Use Case | Virtualization | Virtualization | Virtualization | Virtualization | Virtualization |
| Virtualization Ready | Yes | Yes | Yes | Yes | Yes |
| Weight | 45 lbs | 50 lbs | 45 lbs | 75 lbs | 55 lbs |
| Width | 17.2 inches | 19 inches | 17 inches | 17 inches | 17.5 inches |
Reviews & Ratings
M
Mariam Saleem
4
Good thermal management and uptime.
L
Lars Petersen
5
Performs consistently in production.
A
Adnan Sheikh
5
Designed well for enterprise environments.
N
Natalie Brooks
5
Satisfied with overall performance.
Questions & Answers
What is the maximum raw storage capacity of the HPE Apollo 4520 Server (SKU: 799581-B22)?
The HPE Apollo 4520 Server supports up to 60 small form factor drives, delivering a maximum raw storage capacity of 720 TB with 12 TB SSDs.
Which processors are supported in the HPE Apollo 4520 Server?
This server supports up to two Intel® Xeon® Scalable processors, offering up to 28 cores per CPU for high-density, data-intensive workloads.
How much memory can be installed in the HPE Apollo 4520 Server?
The system accommodates up to 24 DDR4 DIMM slots, supporting a maximum of 3 TB of memory with 128 GB DIMMs for in-memory analytics and caching.
What network connectivity options are available on the HPE Apollo 4520 Server?
The server offers flexible NIC choices, including 1 GbE, 10 GbE, 25 GbE, 40 GbE and converged network adapters, enabling high-throughput data access.
Which RAID levels does the HPE Apollo 4520 Server support?
Integrated HPE Smart Array controllers support RAID 0, 1, 5, 6, 10, 50 and 60 for robust data protection and performance optimization.
What form factor and rack space does the HPE Apollo 4520 require?
The Apollo 4520 is a 2U rack-mount server designed for high-density deployments, optimizing storage per U in standard 19-inch data center racks.
How is power redundancy managed in the HPE Apollo 4520 Server?
The server includes two hot-swappable 1600 W PSUs with N+1 redundancy, ensuring uninterrupted operation and simplified serviceability.
Which operating systems are certified on the HPE Apollo 4520 Server?
HPE certifies Red Hat Enterprise Linux, SUSE Linux Enterprise Server, CentOS, Ubuntu, VMware ESXi and Microsoft Windows Server for this platform.
What remote management capabilities does the HPE Apollo 4520 Server offer?
HPE Integrated Lights-Out (iLO) provides agentless remote management, including virtual media, power control, health monitoring and firmware updates.
Can the HPE Apollo 4520 Server be used in scale-out architectures?
Yes, the Apollo 4520 is designed for clustered object and file storage solutions, supporting scale-out growth with consistent performance and capacity expansion.
What are the typical use cases for the HPE Apollo 4520 Server?
Ideal for software-defined storage, cloud object storage, big data analytics and high-capacity archive environments requiring cost-effective density.
Does the HPE Apollo 4520 Server support GPU acceleration?
The Apollo 4520 is optimized for high-density storage and does not support GPU acceleration; consider the HPE Apollo 6500 for GPU-centric workloads.
What warranty and support options are available for the HPE Apollo 4520 Server?
Standard coverage includes a three-year, next-business-day onsite hardware warranty, with optional HPE Pointnext services for proactive monitoring and rapid response.
How does the HPE Apollo 4520 Server ensure efficient cooling?
The server features front-to-back airflow with redundant, hot-swappable fans and a low-power design, reducing total cost of ownership through optimized energy use.
What virtualization platforms are compatible with the HPE Apollo 4520 Server?
This server is validated for VMware vSphere, Microsoft Hyper-V and Red Hat Virtualization, enabling consolidated, high-capacity virtual environments.
How quickly can the HPE Apollo 4520 Server be deployed?
With HPE QuickSpecs and Factory Integrated Models, the Apollo 4520 can be factory-configured and racked in under an hour, accelerating time to service.
What data protection features are built into the HPE Apollo 4520 Server?
Key features include hot-swappable drives, redundant power and cooling, predictive analytics via HPE InfoSight, and advanced RAID for data integrity.