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PCIe RI mezzanine card delivers fast read performance.
794605-B21
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HPE 1.6TB PCIe x4 Lanes Read Intensive Mezzanine 3yr Warrant...
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794605-B21
- Description:
- HPE 1.6TB PCIe x4 Lanes Read Intensive Mezzanine 3yr Warranty Card Supports Gen8 Servers and Beyond
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3 Year Extended Warranty
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794605-B21 Overview
794605-B21 is a high-performance HDD engineered with a 3.5-inch form factor and a SATA III interface, delivering reliable storage with a 7200 RPM spindle speed and a capacity of 4 TB. Designed for continuous operation, it features a 256 MB cache and an annual workload rating of 300 TB/yr, ensuring optimal performance for data-intensive applications.
Optimized for varied environments including desktops, servers, NAS systems, and surveillance setups, 794605-B21 supports multi-bay deployments while maintaining low power consumption (8 Watts for read/write and 6 Watts when idle). Its advanced features, including a helium-sealed design, vibration protection, and dual actuator technology, make it ideal for demanding use cases in data centers and high-availability storage infrastructures.
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794605-B21 Specifications
- Product Type
- Hard Drive
- Drive Type
- HDD
- Use Case
- Desktop / Server / NAS / Surveillance / Enterprise Storage
- Interface
- SATA III
- Form Factor
- 3.5-inch
- Storage Capacity
- 4 TB
- Spindle Speed (RPM)
- 7200 RPM
- Cache (Buffer Size)
- 256 MB
- Average Latency
- N/A
- Data Transfer Rate
- Up to 210 MB/s
- Annual Workload Rating
- 300 TB/yr
- Power Consumption (Read/Write)
- 8 Watts
- Power Consumption (Idle)
- 6 Watts
- Encryption Support
- AES 256-bit
- Helium Sealed
- Helium-Sealed
- Drive Bays Supported
- Multi-bay
- Vibration Protection
- Yes
- Advanced Features
- Dual Actuator
- Operating Temperature
- 5–60°C
- Product Name
- 794605-B21 High Performance Hard Drive
- Height
- 1.03 inches
- Width
- 5.79 inches
- Depth
- 7.78 inches
- Weight
- 2.0 lbs
794605-B21 Use Case
Real-Time Financial Analytics Acceleration
In a trading firm deploying HPE Gen8 servers, the 794605-B21 HPE 1.6 TB PCIe x4 Read-Intensive Mezzanine Card caches streaming market data and historical tick records. Its high IOPS and low latency ensure sub-millisecond query responses for risk-adjusted pricing and compliance reporting. Outcome: 40% faster trade decision cycles, stronger SLAs, and reduced data-store bottlenecks under peak market load.
High-Density Virtual Desktop Infrastructure (VDI)
An enterprise IT team uses the 794605-B21 card in a Gen8 blade cluster to handle boot storms and user-profile loads across 500+ virtual desktops. The read-optimized SSD delivers consistent performance during concurrent logins and application launches. Outcome: 60% reduction in login times, improved end-user experience, and 30% higher VM density per server.
Edge-Caching for Content Delivery Networks
A telecom operator integrates the 794605-B21 HPE card in edge servers to store frequently accessed video streams and web assets. Leveraging PCIe x4 bandwidth and a 1.6 TB capacity, the system offloads origin traffic and accelerates content delivery. Outcome: 50% lower backbone bandwidth costs, 25% faster page-load times for end users, and scalable caching across Gen8 and newer platforms.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 794605-B21 |  507284-001 |  P10448-B21 |  Q2T62A |  759210-B21 | |
|---|---|---|---|---|---|
| Product Type | Hard Drive | Hard Drive | Hard Drive | Hard Drive | Hard Drive |
| Drive Type | HDD | HDD | HDD | HDD | HDD |
| Use Case | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance | Desktop / Server / NAS / Surveillance / Enterprise Storage |
| Interface | SATA III | SATA III | SATA III | SATA III | SATA III |
| Form Factor | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch |
| Storage Capacity | 4 TB | 4 TB | 4 TB | 4 TB | 4 TB |
| Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
| Cache (Buffer Size) | 256 MB | 256 MB | 128 MB | 256 MB | 128 MB |
| Average Latency | N/A | N/A | N/A | N/A | N/A |
| Data Transfer Rate | Up to 210 MB/s | Up to 250 MB/s | Up to 250 MB/s | Up to 250 MB/s | Up to 210 MB/s |
| Annual Workload Rating | 300 TB/yr | 550 TB/yr | 180 TB/yr | 180 TB/yr | 550 TB/yr |
| Power Consumption (Read/Write) | 8 Watts | 8 Watts | 8 W | 8.5 Watts | 8 Watts |
| Power Consumption (Idle) | 6 Watts | 5 Watts | 5 W | 5.6 Watts | 4 Watts |
| Encryption Support | AES 256-bit | AES 256-bit | No | AES 256-bit | AES 256-bit |
| Helium Sealed | Helium-Sealed | No | Helium-Sealed | Helium-Sealed | Helium-Sealed |
| Drive Bays Supported | Multi-bay | Multi-bay | Multi-bay | Multi-bay | Multi-bay |
| Vibration Protection | Yes | Yes | Yes | Yes | Yes |
| Advanced Features | Dual Actuator | N/A | Dual Actuator | Dual Actuator | Dual Actuator |
| Operating Temperature | 5–60°C | 5–60°C | 5–55°C | 5–60°C | 5–60°C |
| Product Name | 794605-B21 High Performance Hard Drive | 507284-001 Enterprise HDD | P10448-B21 4TB 7200RPM Helium-Sealed HDD | Q2T62A Enterprise HDD | 759210-B21 |
| Height | 1.03 inches | 1 inch | 1.00 inches | 1.0 inches | 1.03 inches |
| Width | 5.79 inches | 4 inches | 5.80 inches | 5.8 inches | 5.79 inches |
| Depth | 7.78 inches | 5.79 inches | 4.00 inches | 3.9 inches | 8.66 inches |
| Weight | 2.0 lbs | 2.0 lbs | 2.20 lbs | 2.0 lbs | 2.2 lbs |
Reviews & Ratings
A
Ahsan Farooq
4
Noticeable improvement in latency-sensitive workloads.
I
Ingrid Svensson
5
Stable and powerful solution for Gen8 servers.
N
Noman Siddiq
5
Easy installation and reliable operation.
P
Peter Young
4
Enterprise PCIe storage that performs well.
Questions & Answers
What is the storage capacity of the HPE 794605-B21 Mezzanine Card?
The HPE 794605-B21 Mezzanine Card delivers 1.6 TB of read-intensive NAND flash capacity in a mezzanine form factor.
Which interface and protocol does this card support?
This card uses a PCIe Gen3 x4 interface with NVMe protocol to maximize throughput and I/O performance.
Is the HPE 794605-B21 compatible with HPE Gen8 and later servers?
Yes, the HPE 794605-B21 is fully compatible with HPE ProLiant Gen8, Gen9, Gen10, and later server models.
What workloads are best suited for this read-intensive mezzanine card?
It is optimized for read-intensive applications such as web serving, content delivery, database query acceleration, and analytics.