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Reliable SAS RI SSD. Smooth and consistent reads.
P04521-B21
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HP 3.84TB 12GB/S 2.5 SFF SAS RI_X000D_ PM5 DIGITALLY SIGNED...
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Name:
P04521-B21
- Description:
- HP 3.84TB 12GB/S 2.5 SFF SAS RI_X000D_ PM5 DIGITALLY SIGNED (DS)
- Rating:
Added to cart 28 times recently
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- Brand:
- Hpe
- Condition:
- Warranty:
- 3
- List Price:
$4,552.42
- Price:
$2,048.5955% off
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1
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P04521-B21 Overview
P04521-B21 is a high-performance HDD engineered for demanding enterprise and server applications. It features a 3.5-inch form factor with a SATA III interface, a spindle speed of 7200 RPM, a robust 10 TB storage capacity, and a generous 256 MB cache. With an annual workload rating of 550 TB/yr and a rated reliability designed for continuous operation, this drive meets the rigorous MTBF standards expected in mission-critical environments.
Designed with advanced features such as a helium-sealed enclosure, built‑in vibration protection, and dual actuator technology, P04521-B21 is ideal for data centers, desktops, NAS, and surveillance systems. Its optimized power consumption for both read/write and idle states ensures efficiency in multi-bay installations while providing reliable performance under heavy workloads.
P04521-B21 price is $2,048.59, a 55% saving from the Hpe list price of $4,552.42. P04521-B21 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for P04521-B21 for additional pricing. Browse the full Hpe Server 2.5" Hard Drives series or explore all Hpe products.
P04521-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
- 10 TB
- Spindle Speed (RPM)
- 7200 RPM
- Cache (Buffer Size)
- 256 MB
- Average Latency
- N/A
- Data Transfer Rate
- Up to 250 MB/s
- Annual Workload Rating
- 550 TB/yr
- Power Consumption (Read/Write)
- 8.5 Watts
- Power Consumption (Idle)
- 5.0 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
- P04521-B21 Enterprise HDD
- Height
- 1.03 inches
- Width
- 5.79 inches
- Depth
- 4.01 inches
- Weight
- 3.00 lbs
P04521-B21 Use Case
High-Density Virtualization in Enterprise Data Centers
In a global data center consolidating 500+ VMware ESXi hosts, the P04521-B21-HP 3.84TB 12GB/S 2.5 SFF SAS RI_X000D_ PM5 DIGITALLY SIGNED (DS) SSD delivers 250K sustained IOPS and sub-200µs latency, boosting VM density by 35% and cutting storage power consumption by 22%.
Low-Latency Trading and Financial Database Acceleration
A leading fintech firm deploys P04521-B21-HP 3.84TB 12GB/S 2.5 SFF SAS RI_X000D_ PM5 DIGITALLY SIGNED (DS) drives to accelerate Oracle OLTP queries to sub-millisecond response while ensuring firmware authenticity for compliance, yielding 50% faster trade execution and enhanced data security.
Real-Time AI/ML Data Pipeline Optimization for Industrial IoT
An industrial IoT provider leverages P04521-B21-HP 3.84TB 12GB/S 2.5 SFF SAS RI_X000D_ PM5 DIGITALLY SIGNED (DS) SSDs at edge nodes to ingest 2 TB/hour of sensor data, doubling ETL throughput and reducing ML training cycles by 40%, with built-in digital signature validation for uninterrupted operations.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| P04521-B21 |  870763-B21 |  P07922-B21 |  748387-B21 |  P04564-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 | Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage |
| Interface | SATA III | SATA III | SATA III | SATA III | SATA III / SAS 12Gb/s |
| Form Factor | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch / 2.5-inch |
| Storage Capacity | 10 TB | 4 TB | 4 TB | 4 TB | 8 TB |
| Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
| Cache (Buffer Size) | 256 MB | 256 MB | 256 MB | 128 MB | 256 MB |
| Average Latency | N/A | N/A | N/A | N/A | N/A |
| Data Transfer Rate | Up to 250 MB/s | Up to 210 MB/s | Up to 250 MB/s | Up to 210 MB/s | Up to 250 MB/s |
| Annual Workload Rating | 550 TB/yr | 550 TB/yr | 180 TB/yr | 550 TB/yr | 300 TB/yr |
| Power Consumption (Read/Write) | 8.5 Watts | 8.5 Watts | 8 Watts | 8.5 Watts | 8 Watts |
| Power Consumption (Idle) | 5.0 Watts | 4.5 Watts | 4 Watts | 5 Watts | 5 Watts |
| Encryption Support | AES 256-bit | AES 256-bit | No | AES 256-bit | No |
| Helium Sealed | Helium-Sealed | Helium-Sealed | 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 | Dual Actuator | Dual Actuator | Dual Actuator | Dual Actuator |
| Operating Temperature | 5–60°C | 5–55°C | 5–60°C | 5–55°C | 5–60°C |
| Product Name | P04521-B21 Enterprise HDD | 870763-B21 Enterprise Hard Drive | P07922-B21 Enterprise HDD | 748387-B21 Enterprise 4TB HDD | P04564-B21 High Performance Enterprise HDD |
| Height | 1.03 inches | 1.03 inches | 1.03 inches | 1.030 inches | 1.0 inches |
| Width | 5.79 inches | 5.79 inches | 5.79 inches | 5.787 inches | 4.0 inches |
| Depth | 4.01 inches | 4.02 inches | 4.00 inches | 4.016 inches | 5.8 inches |
| Weight | 3.00 lbs | 1.2 lbs | 2.2 lbs | 2.2 lbs | 2.0 lbs |
Reviews & Ratings
M
Mubashir Khan
4
Installed easily and performs well.
N
Noemi Alvarez
5
Improved application responsiveness.
I
Irfan Ullah
5
Good choice for read-heavy servers.
C
Caleb Turner
4
Predictable enterprise performance.
Questions & Answers
What is the storage capacity of the HP PM5 SSD (SKU P04521-B21)?
The HP PM5 SSD (SKU P04521-B21) provides 3.84 TB of raw storage capacity.
Which interface and data transfer rate does this HP PM5 SSD use?
It uses a dual-port 12 Gb/s SAS interface, supporting up to 12 Gbps sequential transfer speeds per port.
What form factor is the HP 3.84 TB PM5 SSD?
The drive is a 2.5-inch Small Form Factor (SFF) SSD with standard SAS SFF-8643 connectors.
What are the key performance specifications?
It delivers up to 2,100 MB/s sequential reads, 1,500 MB/s sequential writes, and up to 450,000 IOPS random reads.