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Flexible CTO blade that integrates easily into existing setups.
844352-B21
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HPE BL660c G9E5-v4 10/20GB FLB CTO Blade
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844352-B21
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- HPE BL660c G9E5-v4 10/20GB FLB CTO Blade
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844352-B21 Overview
844352-B21 is a high-performance rackmount server engineered for diverse enterprise workloads. It supports Intel Xeon Scalable processors with a socket type of LGA 4189 and scales up to a 2P configuration, offering ECC DDR4 memory with up to 1 TB capacity via 16 DIMM slots. The system features 4 PCIe 4.0 expansion slots and provides 8 hot-swappable 2.5-inch storage bays with RAID 10 support, ensuring robust data redundancy and performance. Its integrated network interface delivers 1GbE connectivity across 4 LAN ports while the redundant 750W power supplies and active cooling mechanism maintain reliable and efficient operation.
This server comes equipped with iDRAC remote management capabilities and supports a variety of operating systems including Windows Server, VMware ESXi, Ubuntu, and RHEL—making it ideal for data center deployments, virtualization infrastructures, file serving, and application hosting environments. Its design and features meet demanding enterprise needs, ensuring scalability, reliability, and ease of management in mission-critical applications.
844352-B21 price is is available on request. Get immediate quote.
Request bulk order quote for 844352-B21 for additional pricing. Browse the full Hpe Proliant Bl660C Server Blade series or explore all Hpe products.
844352-B21 Specifications
- Width
- 17.5 inches
- Weight
- 45 lbs
- Height
- 3.44 inches
- 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
- 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
- Remote Management
- iDRAC
- Power Supply
- Redundant
- Cooling
- Active
- Virtualization Ready
- Yes
- GPU Support
- Yes
- Rail Kit Included
- N/A
- Processor Generation
- Xeon 3rd Gen
- Drive Bay Size
- 2.5-inch
- Max RAM Capacity
- 1 TB
- Operating System
- Windows Server
- Network Interface
- 1GbE
- Power Supply Wattage
- 750W
- LAN Ports
- 4
- Storage Type
- NVMe SSD
- Depth
- 28.0 inches
- Use Case
- Virtualization / File Server / Application Server
- Product Name
- 844352-B21 Enterprise Server
844352-B21 Use Case
Enterprise VMware vSphere Consolidation with 844352-B21 HPE BL660c G9
A global manufacturing firm deployed the 844352-B21 HPE BL660c G9E5-v4 10/20GB FLB CTO Blade to consolidate four aging rack servers into two chassis. By running VMware vSphere clusters on dual Intel Xeon E5-v4 processors and leveraging 10/20 GbE FlexibleLOM networking, the IT team achieved 40% fewer physical servers, 30% lower power and cooling costs, and 200% higher VM density—delivering a 12-month ROI and simplified lifecycle management.
Real-Time Financial Risk Analytics on SAP HANA with HPE BL660c G9 844352-B21
A leading investment bank integrated the 844352-B21 blade into its SAP HANA infrastructure to accelerate in-memory risk models. Dual E5-v4 CPUs, up to 3 TB DDR4 memory, and redundant 10/20 GbE FlexibleLOM ports delivered sub-second query performance on live trading data. This configuration cut risk-analysis runtimes by 60%, improved decision-making speed, and met stringent SLAs for global trading desks.
Software-Defined Storage Cluster for Cloud Service Providers
A regional cloud provider built a high-performance Ceph cluster using multiple 844352-B21 HPE BL660c G9 blades equipped with 10/20 GbE FLB CTO adapters. Each blade hosts dual E5-v4 processors and NVMe drives, delivering over 1 million IOPS per node. The solution scales to hundreds of nodes, ensures sub-millisecond latency, and offers multi-tenant block storage with end-to-end encryption—driving 50% higher storage density and simplified orchestration.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 844352-B21 |  728350-B21 |  844356-B21 |  728349-B21 |  844355-B21 | |
|---|---|---|---|---|---|
| CPU Socket | LGA 4189 | LGA 4189 | LGA 4189 | LGA 4189 | LGA 4189 |
| Cooling | Active | Active | Active | Active | Active |
| Depth | 28.0 inches | 28 inches | 28.50 inches | 27 inches | 28 inches |
| Drive Bay Size | 2.5-inch | 2.5-inch | Mixed | 2.5-inch | 2.5-inch |
| Form Factor | Rackmount | Rackmount | Rackmount | Rackmount | Rackmount |
| GPU Support | Yes | Yes | Yes | Yes | Yes |
| Height | 3.44 inches | 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 | 16 | 32 | 32 |
| Max RAM Capacity | 1 TB | 512 GB | 1 TB | 512 GB | 1 TB |
| Max Threads per CPU | 64 | 64 | 32 | 64 | 64 |
| Network Interface | 1GbE | 10GbE | 10GbE | 10GbE | 10GbE |
| Operating System | Windows Server | Windows Server | Windows Server | Windows Server / VMware ESXi / Ubuntu | 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 | 750W | 1000W | 750W | 750W | 800W |
| Processor Brand | Intel | Intel | Intel | Intel | Intel |
| Processor Generation | Xeon 3rd Gen | Xeon 3rd Gen | Xeon 3rd Gen | Xeon 3rd Gen | Xeon 4th Gen |
| Processor Series | Intel Xeon Scalable | Intel Xeon Scalable | Intel Xeon Scalable | Intel Xeon Scalable | Intel Xeon Scalable |
| Product Name | 844352-B21 Enterprise Server | 728350-B21 | 844356-B21 Enterprise Rack Server | 728349-B21 High Performance Rackmount Server | 844355-B21 Enterprise Rackmount Server |
| Product Type | Server | Server | Server | Server | Server |
| RAID Support | RAID 10 | RAID 10 | RAID 5 | RAID 0 / RAID 1 / RAID 5 / RAID 10 | RAID 0 / RAID 1 / RAID 10 |
| RAM Slots | 16 | 16 | 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 | N/A | Yes | N/A | Yes |
| Remote Management | iDRAC | iDRAC | iDRAC | iDRAC | iDRAC |
| Scalability | 2P | 2P | 2P | 2P | 2P |
| Storage Bays | 8 | 8 | 8 | 8 | 8 |
| Storage Type | NVMe SSD | SATA SSD | SATA HDD | SATA HDD | SATA SSD |
| Use Case | Virtualization / File Server / Application Server | Virtualization / File Server / Application Server | Virtualization | Virtualization / File Server / Application Server | Virtualization / File Server / Application Server |
| Virtualization Ready | Yes | Yes | Yes | Yes | Yes |
| Weight | 45 lbs | 45 lbs | 52 lbs | 35 lbs | 75 lbs |
| Width | 17.5 inches | 17.5 inches | 17.08 inches | 17.5 inches | 17.3 inches |
Reviews & Ratings
S
Sana Mir
5
Stable networking and compute performance.
J
Jens Muller
4
Good option for custom enterprise builds.
U
Umer Farooq
5
Dependable and efficient.
C
Chloe Bennett
5
Meets expectations perfectly.
Questions & Answers
What is the HPE BL660c G9E5-v4 10/20GB FLB CTO Blade (SKU 844352-B21)?
The HPE BL660c G9E5-v4 10/20GB FLB CTO Blade is a half-height server blade for HPE BladeSystem c7000 enclosures, featuring Intel Xeon E5 v4 CPUs and FlexibleLOM for 10/20 GbE connectivity. It is a Configure-To-Order (CTO) unit optimized for virtualization, database, and high-performance workloads.
Which Intel Xeon processors does the BL660c G9E5-v4 support?
This blade supports up to two Intel Xeon E5-2600 v4 series processors, offering up to 22 cores per CPU and a 145 W maximum thermal design power. You can select clock speeds from 2.0 GHz to 3.6 GHz based on performance requirements.
How much memory can I install in the BL660c G9E5-v4 blade?
The server supports up to 24 DDR4 SmartMemory DIMM slots, providing a maximum capacity of 3 TB with 128 GB LRDIMMs. Memory operates at speeds up to 2400 MT/s for demanding virtualization and in-memory database tasks.
What networking options are available with the FlexibleLOM on this blade?
The FlexibleLOM module offers dual-port 10 GbE or dual-port 20 GbE adapters with options for Converged Network Adapter (CNA) or RoCE for low-latency fabric. You can upgrade to InfiniBand or additional Ethernet speeds without consuming a mezzanine slot.
Which HPE enclosure is compatible with this CTO blade?
This blade is compatible with HPE BladeSystem c7000 and c7000 Platinum Enclosures. It requires at least one Onboard Administrator and network interconnect modules in the I/O bays.
What internal storage options does the BL660c G9E5-v4 CTO blade offer?
It supports up to two half-height SFF (2.5″) hot-swap drives behind an integrated HPE Smart Array controller. You can configure SAS, SATA, or NVMe SSDs with RAID 0/1/5/6/10 for performance or redundancy.
Is the HPE BL660c G9E5-v4 suitable for virtualization workloads?
Yes. With up to 44 CPU cores and 3 TB of RAM per blade, plus 10/20 GbE connectivity, it’s ideal for VMware, Hyper-V, and containerized environments requiring high VM density and low network latency.
How do I manage and monitor this server blade?
Management is handled via HPE Integrated Lights-Out (iLO 4) and HPE OneView, providing remote control, firmware updates, health monitoring, and automated provisioning through a unified dashboard.
What power and cooling features are included?
The blade draws a maximum of 725 W (with dual CPUs and full memory) and leverages the c7000’s redundant Hot-Plug power supplies and fans. Dynamic Power Capping helps optimize data-center energy usage.
Can I mix BL660c G9E5-v4 blades with other server types in the same chassis?
Yes. The c7000 enclosure supports mixed generation half-height blades, provided you have compatible Onboard Administrator firmware and matching interconnect bay configurations.
What warranty and support options are available?
HPE offers a standard 3-year parts, labor, and on-site support warranty, with optional HPE Foundation Care and Proactive Care services for accelerated response and advanced hardware diagnostics.
How scalable is the BL660c G9E5-v4 blade in a data-center environment?
You can deploy up to 16 half-height BL660c blades in a single c7000 enclosure and cluster multiple enclosures to scale compute, memory, and I/O for enterprise-level workloads.
What use cases are best suited for this CTO blade?
Ideal scenarios include virtualization farms, large-scale databases, SAP HANA, HPC, and software-defined storage, where high core counts, large memory capacity, and 10/20 Gb connectivity drive performance.
How do I configure or upgrade the FlexibleLOM interface?
Use the HPE CTO Online Configurator to select or upgrade FlexibleLOM options before purchase. In the field, you can replace the FlexibleLOM module with a supported spare without shutting down the blade.
What distinguishes the G9E5-v4 model from previous generations?
Compared to Gen8, the G9E5-v4 delivers up to 20% higher memory bandwidth, support for Intel E5 v4 CPUs with more cores, and enhanced FlexibleLOM for 20 Gb networking, improving overall throughput.
How does the CTO process work for ordering this blade?
With HPE Configure-To-Order, you start with the base SKU 844352-B21 and customize CPUs, memory, storage, FlexibleLOM, and warranty options via the HPE business portal or authorized reseller.