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P04521-B21
HP 3.84TB 12GB/S 2.5 SFF SAS RI_X000D_ PM5 DIGITALLY SIGNED...
Federal agencies and Fortune 500 operations source through ORM Systems.
US Government & Defense
Enterprise Clients
Regional teams and 25+ distribution partners keep stock near you and accountability in your time zone.
Pay by PayPal or Revolut with full chargeback rights. Order on PO terms, Net-30 for government.
Every registration we claim is public record — check our federal contractor status yourself before you spend a dollar.
Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
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.
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%.
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.
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.
Mon–Fri: [09:00-16:00]
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| 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 |
| 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 |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reliable SAS RI SSD. Smooth and consistent reads.
Installed easily and performs well.
Improved application responsiveness.
Good choice for read-heavy servers.
Predictable enterprise performance.
The HP PM5 SSD (SKU P04521-B21) provides 3.84 TB of raw storage capacity.
It uses a dual-port 12 Gb/s SAS interface, supporting up to 12 Gbps sequential transfer speeds per port.
The drive is a 2.5-inch Small Form Factor (SFF) SSD with standard SAS SFF-8643 connectors.
It delivers up to 2,100 MB/s sequential reads, 1,500 MB/s sequential writes, and up to 450,000 IOPS random reads.
It is optimized for read-intensive enterprise workloads such as databases, virtualization, and analytics.
The drive is rated at 1 Drive Write Per Day (DWPD) over a 5-year lifespan, equating to approximately 7 PB of total writes.
The HP PM5 SSD is rated at 2 million hours Mean Time Between Failures (MTBF) for enterprise-grade reliability.
Yes, the SSD is hot-swap capable in compatible 2.5″ SAS backplanes and enclosures.
It uses HPE Digitally Signed Firmware to verify code authenticity and prevent unauthorized modifications.
This model does not include on-drive self-encrypting capabilities; encryption is managed by the host or controller.
It is compatible with HPE ProLiant Gen10/Gen10+ servers, Apollo systems, and any SAS-capable 2.5″ bay enclosure.
Install the drive into a compatible 2.5″ SAS caddy, insert into the server or array backplane, then configure via BIOS or RAID controller.
Firmware updates are provided through the HPE Service Pack for ProLiant (SPP) and can be applied via iLO or Smart Update Manager.
Use HPE InfoSight, Smart Array controllers, or industry-standard S.M.A.R.T. tools to monitor drive health, temperature, and performance metrics.
The SSD includes a 3-year limited warranty, with optional 4- and 5-year extensions available through HPE Care Pack Services.
Active power consumption is approximately 9 W, idle power is around 4 W, and operating temperature ranges from 0 °C to 60 °C.
United States
