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Reliable SATA drive for general purpose server storage.
858596-B21
HPE 2TB 6G SATA 7.2K rpm LFF (3.5in) SC Standard 1 yr Warran...
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858596-B21
HPE 2TB 6G SATA 7.2K rpm LFF (3.5in) SC Standard 1 yr Warran...
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858596-B21 is a high-performance HDD engineered for demanding applications with a 3.5-inch form factor and a SATA III interface, operating at 7200 RPM with a 4 TB storage capacity and a robust 128 MB cache. It delivers a rated annual workload of 180 TB and an MTBF of 1,000,000 hours, ensuring reliable performance while being built to handle intensive data center, desktop, NAS, and surveillance environments.
Designed for efficiency, this drive consumes approximately 8 Watts during read/write operations and 5 Watts in idle mode, complemented by advanced features such as a helium-sealed design and dual actuator technology with vibration protection. Its versatility and robust construction make 858596-B21 an ideal solution for enterprise storage applications, offering a dependable performance profile across various computing platforms.
858596-B21 price is $251.71, a 22% saving from the Hpe list price of $322.71. 858596-B21 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for 858596-B21 for additional pricing. Browse the full Hpe Server 3.5" Hard Drives series or explore all Hpe products.
In small to mid-sized enterprises, deploying the 858596-B21-HPE 2TB 6G SATA 7.2K rpm LFF (3.5in) SC Standard 1 yr Warranty Hard Drive for overnight server image backups in HPE ProLiant environments reduces backup windows by 35%, accelerates disaster recovery to under 2 hours, and maintains data integrity while minimizing capital expenditure.
Integrating the 858596-B21-HPE 2TB 6G SATA 7.2K rpm LFF (3.5in) SC Standard 1 yr Warranty Hard Drive into VMware clusters on HPE ProLiant DL380 systems delivers stable 150 MB/s sequential throughput per disk, optimizes virtual machine provisioning, and lowers I/O latency by 20%, ensuring predictable performance for mixed workloads.
Implementing the 858596-B21-HPE 2TB 6G SATA 7.2K rpm LFF (3.5in) SC Standard 1 yr Warranty Hard Drive in network video recorders provides reliable sustained writes for continuous HD camera recording, supports over 30 days of compliant footage retention per drive, and reduces total cost of ownership in large-scale surveillance deployments.
To get the detailed certification, please go to the Compliance Center.
 858596-B21 |  804590-B21 |  846514-B21 |  843266-B21 |  861590-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 / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage |
| Interface | SATA III | SAS 12Gb/s | SATA III | SATA III | SAS 12Gb/s |
| Form Factor | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch |
| Storage Capacity | 4 TB | 8 TB | 4 TB | 4 TB | 2 TB |
| Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
| Cache (Buffer Size) | 128 MB | 256 MB | 256 MB | 256 MB | 128 MB |
| Average Latency | N/A | N/A | N/A | N/A | 4.17 ms |
| Data Transfer Rate | Up to 250 MB/s | Up to 250 MB/s | Up to 250 MB/s | Up to 210 MB/s | Up to 210 MB/s |
| Annual Workload Rating | 180 TB/yr | 550 TB/yr | 300 TB/yr | 300 TB/yr | 550 TB/yr |
| Power Consumption (Read/Write) | 8 Watts | 8 Watts | 8 Watts | 8 Watts | 8.0 Watts |
| Power Consumption (Idle) | 5 Watts | 5 Watts | 5 Watts | 4 Watts | 5.0 Watts |
| Encryption Support | AES 256-bit | AES 256-bit | No | AES 256-bit | AES 256-bit |
| Helium Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed |
| Drive Bays Supported | Multi-bay | Single | 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 | 5–60°C | 5–60°C | 5–60°C | 5–60°C |
| Product Name | 858596-B21 | 804590-B21 Enterprise HDD | 846514-B21 High Performance HDD | 843266-B21 4TB Desktop HDD | 861590-B21 2TB Enterprise HDD |
| Height | 1 inches | 1.03 inches | 1.0 inches | 1.02 inches | 1.03 inches |
| Width | 5.8 inches | 5.79 inches | 4.0 inches | 5.79 inches | 4.00 inches |
| Depth | 4 inches | 7.25 inches | 5.8 inches | 4.01 inches | 5.79 inches |
| Weight | 2.2 lbs | 2.0 lbs | 1.2 lbs | 1.5 lbs | 1.5 lbs |
Reliable SATA drive for general purpose server storage.
Good performance for daily operations.
OEM compatibility ensured smooth deployment.
Stable and predictable drive.
Decent option for cost conscious builds.
The HPE 858596-B21 provides 2 TB of raw storage capacity, ideal for applications requiring high-volume data retention and fast access.
This drive uses a 6 Gb/s SATA interface, ensuring broad compatibility with HPE ProLiant servers and industry-standard storage controllers.
The HPE 858596-B21 spins at 7,200 RPM, delivering a balanced combination of performance and reliability for general-purpose workloads.
It features a Large Form Factor (LFF) 3.5-inch design, allowing straightforward installation into most HPE server drive bays.