833928-K21 HPE 4TB 7.2K RPM SAS 12GBPS DS Internal Hard Drive

Details of HPE 4TB SAS 12GBPS HDD

The HPE 833928-K21 is a robust enterprise-class hot-swap hard drive engineered for midline workloads. With 4TB of storage, a 12Gbps SAS interface, and 7200 RPM rotational speed, it ensures dependable performance and seamless integration with HPE ProLiant servers.

Manufacturer Details

• Manufacturer: HPE
• Model Number: 833928-K21
• Product Type: Hot-Swap Internal Hard Drive

Technical Highlights

• Capacity: 4 Terabytes
• Interface Type: SAS 12Gbps
• Form Factor: 3.5-inch Large Form Factor (LFF) Low Profile
• Bytes per Sector: 512
• Format Type: 512n
• Drive Technology: Air-filled
• Carrier Type: Low Profile (LP)
• Workload Type: Midline
• Plug Type: Hot Plug
• Features: Advanced Format 512n, Digitally Signed Firmware
• Bundled With: HPE Low Profile Carrier (LPC)

Performance Details

Speed & Efficiency

• Transfer Rate (Max): 12Gb/sec
• Maximum Sequential Throughput: 200 MiB/s
• Random Read (IOPs): 110
• Random 70% Read / 30% Write (IOPs): 110
• Random 50% Read / 50% Write (IOPs): 110
• Rotational Speed: 7200 RPM

Expansion & Connectivity

Interface Options

• Connection Port: 1 x SAS 12Gb/s
• Compatible Bay Size: 3.5-inch LFF

Environmental Parameters

Operating Temperature Range

• Minimum: 50°F (10°C)
• Maximum: 95°F (35°C)

Power Requirement

Energy Usage

• Idle: 4.70 Watts
• Random Read/Write: 6.10 Watts
• Sequential Read: 6.30 Watts
• Sequential Write: 6.30 Watts

Dimensions

Physical Measurements

• Height: 1.028 inches (26.1 mm)
• Width: 4.15 inches (105.5 mm)
• Depth: 6.16 inches (156.58 mm)

Compatibility Specification

Designed For

HPE ProLiant DL (Rack) Series

• DL20 Gen10
• DL20 Gen10 Entry
• DL20 Gen10 Performance
• DL20 Gen10 Solution

HPE ProLiant ML (Tower) Series

Gen10 Models

• ML110 Gen10
• ML110 Gen10 Performance
• ML110 Gen10 Solution
• ML30 Gen10
• ML30 Gen10 Entry
• ML30 Gen10 Performance
• ML30 Gen10 Solution
• ML350 Gen10
• ML350 Gen10 Base
• ML350 Gen10 Entry
• ML350 Gen10 Performance
• ML350 Gen10 Solution
• ML350 Gen10 Sub-Entry

HPE ProLiant XL Series

• XL190r Gen10
• XL450 Gen10

Overview of HPE 833928-K21 4TB 7200RPM 3.5inch LFF HDD

The HPE 833928-K21 4TB 7200RPM 3.5-inch LFF SAS-12Gbps Midline Hard Drive is a high-capacity enterprise storage device engineered for scalable data center environments, demanding server workloads, and long-term data retention systems. Built under the Hewlett Packard Enterprise storage ecosystem, this drive is designed to deliver consistent performance, reliability, and secure firmware validation through digitally signed firmware architecture. It is optimized for midline storage applications where a balance between capacity, cost efficiency, and dependable throughput is essential.

Enterprise-Class Midline Storage Architecture

Design Philosophy of Midline HDD Technology

Midline hard drives such as the HPE 833928-K21 are developed to fill the gap between high-performance enterprise drives and large-capacity archival storage solutions. These drives emphasize capacity per dollar while still maintaining enterprise reliability standards. The architecture focuses on delivering stable 7200RPM rotational speed combined with SAS 12Gbps interface technology to ensure consistent data transfer in multi-user and multi-process server environments.

Balanced Performance and Capacity Optimization

Unlike performance-optimized SAS or NVMe drives, midline drives are engineered for workloads that require frequent but not ultra-low latency access. The 4TB capacity allows organizations to consolidate storage infrastructure, reducing physical drive counts while increasing storage density in 3.5-inch LFF drive bays.

Role in Modern Data Infrastructure

Within enterprise IT environments, this drive category is commonly used for bulk storage systems, backup repositories, and secondary data tiers. It is particularly effective in hybrid storage architectures where SSDs handle high-performance workloads and SAS midline drives provide scalable capacity layers.

SAS-12Gbps Interface and Data Transfer Efficiency

High-Speed Serial Attached SCSI Connectivity

The SAS-12Gbps interface on the HPE 833928-K21 ensures robust data throughput and improved communication between the storage device and the server backplane. SAS technology is widely recognized for its dual-port capability, enabling redundancy and high availability configurations in enterprise storage systems.

Improved Bandwidth Utilization

With a theoretical transfer rate of up to 12 gigabits per second, this drive supports efficient data streaming and reduced bottlenecks in storage-heavy environments. It is well suited for RAID arrays where multiple drives operate simultaneously to enhance performance and fault tolerance.

Enterprise Signal Integrity Advantages

SAS interfaces offer superior signal integrity compared to traditional SATA solutions, making them ideal for large-scale deployments where cable length, backplane complexity, and multi-drive connectivity can introduce potential data transmission challenges.

7200RPM Rotational Speed and Performance Stability

Mechanical Performance Characteristics

The 7200RPM spindle speed provides a balanced performance profile suitable for midline enterprise storage workloads. This rotational speed is optimized to deliver predictable input/output operations per second (IOPS) while maintaining durability and energy efficiency.

Latency and Throughput Considerations

While not designed for ultra-low latency applications like SSDs, the HPE 833928-K21 delivers consistent access times suitable for file storage, backup operations, and large dataset retrieval. The mechanical design ensures stable seek times across sustained workloads.

512n Native Sector Format Compatibility

Traditional 512-byte Sector Architecture

The 512n sector format indicates that the drive operates with native 512-byte sectors, ensuring compatibility with legacy systems and existing storage architectures. This format is widely supported across enterprise operating systems and storage controllers.

System Integration Flexibility

512n drives simplify integration into older RAID systems and mixed storage environments where advanced sector formats such as 4Kn may not be fully supported. This ensures seamless deployment across heterogeneous infrastructure.

Data Processing Efficiency in Legacy Systems

The compatibility of 512n formatting allows organizations to maintain existing software stacks and storage configurations without requiring major infrastructure redesigns or migration complexities.

3.5-inch LFF Form Factor and Physical Design

Large Form Factor Advantages

The 3.5-inch Large Form Factor (LFF) design of the HPE 833928-K21 enables higher storage density per drive, making it suitable for enterprise servers and storage arrays where rack space optimization is critical.

Mechanical Stability and Cooling Efficiency

LFF drives provide improved airflow characteristics in properly designed server chassis. The larger physical structure also supports better heat dissipation, contributing to sustained reliability under continuous operation.

Rack-Level Storage Optimization

Data centers benefit from LFF configurations due to their ability to maximize terabytes per rack unit while maintaining manageable power and cooling requirements.

Midline Storage Applications in Enterprise Environments

Backup and Archival Storage Systems

This drive is particularly effective in backup systems where large volumes of data must be retained for extended periods. Its capacity and reliability make it suitable for scheduled backup cycles and disaster recovery environments.

Secondary Storage Tier Deployment

In tiered storage architectures, midline drives serve as secondary storage layers where data is accessed less frequently but still requires rapid availability when needed.

Scalable Storage Infrastructure Expansion

Organizations can scale storage infrastructure cost-effectively by integrating multiple HPE 833928-K21 drives into RAID configurations or storage clusters.

Server Compatibility and HPE Ecosystem Integration

HPE ProLiant Server Optimization

The HPE 833928-K21 is optimized for use within HPE ProLiant server environments, ensuring full compatibility with firmware, backplane architecture, and system management tools.

Smart Storage Management Integration

Integration with HPE Smart Storage technologies enables efficient monitoring, configuration, and lifecycle management of storage arrays using this drive model.

Enterprise Firmware Synchronization

HPE ensures consistent firmware alignment across supported devices, reducing compatibility risks and improving system stability in large-scale deployments.

Data Center Use Cases and Workload Optimization

Cloud Storage and Virtual Infrastructure

This drive is widely used in cloud environments where scalable storage pools are required to support virtual machines, containers, and distributed applications.

Big Data and Analytics Workloads

For analytical workloads involving large datasets, the 4TB capacity provides sufficient storage density to support batch processing and historical data retention.

Enterprise File Sharing Systems

Organizations implementing centralized file-sharing systems benefit from the drive’s balance of capacity and reliability in multi-user environments.

RAID Configuration and Data Redundancy

Fault Tolerance Through RAID Arrays

The HPE 833928-K21 is commonly deployed in RAID 1, RAID 5, RAID 6, and RAID 10 configurations to ensure redundancy and fault tolerance across enterprise storage systems.

Performance Optimization in Arrays

When multiple drives operate in parallel, aggregate performance improves significantly, enabling higher throughput for read-intensive and mixed workloads.

Data Protection Strategies

RAID configurations combined with enterprise monitoring tools help ensure continuous data protection and system resilience in mission-critical environments.