881781-B21 HPE 12TB 7.2K RPM SAS-12GBPS Midline Internal Hard Drive

HPE 12TB 7.2K RPM SAS 12GBPS HDD

The HPE 881781-B21 is a high-capacity internal hard disk drive designed for enterprise-level storage solutions. With 12TB of space and advanced helium-filled technology, it ensures reliable performance for midline workloads.

General Information

• Manufacturer: HPE
• Part Number: 881781-B21
• Device Type: Internal Hard Disk Drive

Technical Specifications

• Form Factor: 3.5-inch Large Form Factor (LFF)
• Interface: SAS 12Gbps
• Capacity: 12 Terabytes
• Plug Type: Hot Plug
• Carrier Type: Low Profile Carrier (LPC)

Performance Metrics

• Transfer Rate: 12 Gb/sec external
• Rotation Speed: 7200 RPM
• Max Sequential Throughput: 235 MiB/s
• Random Read (IOPs): 105
• Random 70% Read / 30% Write (IOPs): 115
• Random 50% Read / 50% Write (IOPs): 125
• Average Seek Time: 8 ms
• Maximum Seek Time: 16 ms
• Track-to-Track Seek Time: 0.23 ms

Connectivity & Expansion

• Compatible Bay: 3.5-inch LFF
• Interface: 1 x SAS 12Gb/s

Power Efficiency

• Idle Power: 5.50 W
• Random Read/Write: 6.10 W
• Sequential Read: 7.00 W
• Sequential Write: 6.80 W

Environmental Conditions

• Operating Temperature Range: 50°F (10°C) to 95°F (35°C)

Physical Dimensions

• Height: 1.00 inch (2.61 cm)
• Width: 4.40 inch (10.55 cm)
• Depth: 7.40 inch (15.66 cm)

Server Compatibility

HPE ProLiant Gen10 Series

DL Series

• DL20 (Gen10)
• DL160 (Gen10)
• DL325 (Gen10)

ML Series

• ML110 (Gen10)
• ML350 (Gen10)

Apollo Series

• 4500 (Gen10)
• 4510 (Gen10)
• 4520 (Gen10)
• 4530 (Gen10)
• K6000 (Gen10)
• D6500 (Gen10)
• R2200 (Gen10)
• R2600 (Gen10)
• R2800 (Gen10)

HPE ProLiant Gen10 Plus Series

DL Series

• DL20 (Gen10+)
• DL325 (Gen10+)
• DL345 (Gen10+)
• DL360 (Gen10+)
• DL365 (Gen10+)
• DL380 (Gen10+)
• DL385 (Gen10+)

HPE ProLiant Gen11 Series

DL Series

• DL110 (Gen11)
• DL320 (Gen11)
• DL325 (Gen11)
• DL345 (Gen11)
• DL360 (Gen11)
• DL365 (Gen11)
• DL380 (Gen11)
• DL380a (Gen11)
• DL385 (Gen11)
• DL560 (Gen11)

ML Series

• ML110 (Gen11)
• ML350 (Gen11)

HPE ProLiant Gen12 Series

DL Series

• DL320 (Gen12)
• DL340 (Gen12)
• DL360 (Gen12)
• DL380 (Gen12)

ML Series

• ML350 (Gen12)

881781-B21 12TB SAS 12GBPS Hard Disk Drive Overview

The HPE 881781-B21 with tray represents a powerful and enterprise-grade storage solution designed to meet the demands of modern data centers, cloud infrastructures, and high-capacity storage environments. With a massive 12TB storage capacity and a rotational speed of 7.2K RPM, this SAS-12Gbps midline internal hard disk drive delivers a balanced combination of performance, reliability, and scalability. It is specifically engineered for organizations that require consistent throughput and long-term data retention without compromising on durability or efficiency.

This category of midline drives is optimized for environments where data access is frequent but not necessarily latency-critical, making it ideal for backup storage, archival systems, and bulk data processing. The inclusion of an HPE-certified tray ensures seamless integration into compatible HPE ProLiant servers and storage arrays, eliminating compatibility concerns and simplifying deployment in enterprise infrastructures.

Advanced Storage Capacity and Scalability

Meeting Growing Data Demands

The 12TB capacity of the HPE 881781-B21 allows organizations to manage exponentially growing datasets with fewer drives, reducing physical footprint and simplifying storage architecture. As businesses generate and process more data through analytics, virtualization, and cloud-based services, high-capacity drives become essential to maintaining efficiency and cost-effectiveness.

By utilizing fewer drives to achieve large storage volumes, organizations benefit from reduced power consumption, lower cooling requirements, and simplified management. This makes the drive particularly suitable for hyperscale environments, data lakes, and enterprise backup systems where capacity is prioritized over ultra-low latency.

SAS-12Gbps Interface

High-Speed Data Transfer Capabilities

The SAS-12Gbps interface provides a significant improvement in data transfer speeds compared to older SAS and SATA interfaces. This high-bandwidth connection ensures that large volumes of data can be moved efficiently between storage and compute resources. The dual-port capability inherent in SAS technology enhances redundancy and availability, making it a preferred choice for enterprise environments.

Enhanced Reliability Through Dual-Port Architecture

The dual-port SAS interface allows simultaneous access paths to the drive, ensuring continuous data availability even if one path fails. This redundancy is crucial in mission-critical applications where downtime can lead to significant operational and financial losses. The architecture also supports advanced storage configurations such as multipathing, which improves load balancing and fault tolerance.

Integration with Enterprise Storage Systems

The HPE 881781-B21 is designed to integrate seamlessly with HPE storage ecosystems, including ProLiant servers and HPE storage arrays. This compatibility ensures optimal performance and allows administrators to leverage advanced features such as RAID configurations, predictive failure analysis, and centralized management tools.

Rotational Speed and Key Characteristics

Balanced 7.2K RPM

Operating at 7,200 revolutions per minute, the drive offers a balanced performance profile suitable for large-scale storage applications. While not as fast as 10K or 15K RPM drives, the 7.2K RPM speed provides sufficient throughput for sequential workloads and large file transfers, making it ideal for backup and archival tasks.

Efficient Data Handling for Sequential Workloads

The drive excels in environments where data is written and read in large sequential blocks. This includes applications such as media storage, surveillance systems, and big data analytics platforms. The consistent rotational speed ensures stable performance, reducing the risk of bottlenecks during data-intensive operations.

Effective Heat Dissipation

The drive’s design ensures effective heat dissipation, reducing the risk of overheating and extending the lifespan of the device. Proper thermal management is essential in high-density storage environments where multiple drives operate in close proximity.

Compatibility and Deployment Flexibility

Seamless Integration with HPE Systems

The inclusion of a pre-installed tray simplifies the installation process, allowing the drive to be easily inserted into compatible HPE servers and storage systems. This plug-and-play capability reduces deployment time and minimizes the risk of installation errors.

Support for RAID Configurations

The HPE 881781-B21 supports a wide range of RAID configurations, enabling organizations to customize their storage solutions based on performance, redundancy, and capacity requirements. RAID support enhances data protection and ensures business continuity in the event of hardware failures.

Media and Content Storage

Media companies and content creators benefit from the drive’s ability to handle large files such as videos, images, and audio recordings. The high capacity allows for efficient storage of extensive media libraries, while the SAS interface ensures fast data transfer during editing and processing.

Comprehensive Support Services

HPE provides extensive support services, including firmware updates, technical assistance, and warranty coverage. These services ensure that organizations can maintain optimal performance and address any issues promptly.

Optimization Strategies

Maximizing Throughput

To achieve optimal performance, organizations can implement strategies such as proper RAID configuration, workload distribution, and regular monitoring. These practices help maximize the drive’s throughput and ensure efficient utilization of storage resources.