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774876-B21 |
Description: | HPE DL180 Gen9 24SFF Expander FIO Kit |
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774876-B21 Overview
774876-B21 is a high-performance HDD designed for both desktop and server use. It features a flexible form factor available in 3.5-inch and 2.5-inch variants, supports a robust SATA III interface, and spins at 7200 RPM to deliver optimal performance. With a substantial storage capacity of 4 TB and a 128 MB cache, this drive is engineered for consistent throughput in demanding environments.
774876-B21 is built with enterprise reliability in mind, offering a rated annual workload of 300 TB/yr and an impressive MTBF often associated with data center applications. Additional advanced features include a helium-sealed design for reduced turbulence, robust vibration protection, and dual actuator technology, making it an ideal choice in mixed-use scenarios such as data centers, desktops, NAS systems, and surveillance setups.
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774876-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) | 128 MB |
Average Latency | N/A |
Data Transfer Rate | Up to 250 MB/s |
Annual Workload Rating | 300 TB/yr |
Power Consumption (Read/Write) | 8 Watts |
Power Consumption (Idle) | 5 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 | 774876-B21 Official Enterprise HDD |
Height | 1.03 inches |
Width | 5.79 inches |
Depth | 8.7 inches |
Weight | 2.2 lbs |
Quality Certifications
To get the detailed certification, please go to the Compliance Center.







Product Comparison Table
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Advanced Features | Dual Actuator | Dual Actuator | Dual Actuator | Dual Actuator | Dual Actuator |
Annual Workload Rating | 300 TB/yr | 180 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr |
Average Latency | N/A | N/A | N/A | N/A | N/A |
Cache (Buffer Size) | 128 MB | 64 MB | 256 MB | 256 MB | 256 MB |
Data Transfer Rate | Up to 250 MB/s | Up to 150 MB/s | Up to 250 MB/s | Up to 250 MB/s | Up to 250 MB/s |
Depth | 8.7 inches | 4.00 inches | 5.78 inches | 5.79 inches | 4.00 inches |
Drive Bays Supported | Multi-bay | Single | Multi-bay | Multi-bay | Multi-bay |
Drive Type | HDD | HDD | HDD | HDD | HDD |
Encryption Support | AES 256-bit | AES 256-bit | AES 256-bit | AES 256-bit | AES 256-bit |
Form Factor | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch / 2.5-inch | 3.5-inch |
Height | 1.03 inches | 1.03 inches | 1.03 inches | 1.03 inches | 1.03 inches |
Helium Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed |
Interface | SATA III | SATA III | SATA III | SATA III / SAS 12Gb/s | SATA III |
Operating Temperature | 5–60°C | 5–55°C | 5–60°C | 5–60°C | 5–60°C |
Power Consumption (Idle) | 5 Watts | 6 Watts | 6 Watts | 5 Watts | 4 Watts |
Power Consumption (Read/Write) | 8 Watts | 8 Watts | 8 Watts | 8 Watts | 8 Watts |
Product Name | 774876-B21 Official Enterprise HDD | P04519-B21 4TB Enterprise SATA HDD | P05976-B21 Enterprise HDD | 400-ASUG | ZA480CV1A001 8TB SATA Enterprise HDD |
Product Type | Hard Drive | Hard Drive | Hard Drive | Hard Drive | Hard Drive |
Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
Storage Capacity | 4 TB | 4 TB | 4 TB | 10 TB | 8 TB |
Use Case | Desktop / Server / NAS / Surveillance / Enterprise Storage | Server | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Server |
Vibration Protection | Yes | Yes | Yes | Yes | Yes |
Weight | 2.2 lbs | 1.6 lbs | 2.2 lbs | 1.85 lbs | 3.5 lbs |
Width | 5.79 inches | 5.78 inches | 4 inches | 4.00 inches | 5.79 inches |
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