0B47747 Western Digital Ultrastar DC HC555 18TB 7.2K RPM SAS 12GBPS HDD.

Storage

The 18TB capacity of the Western Digital 0B47747 Ultrastar DC HC555 hard drive is designed for modern enterprises dealing with exponential data growth. As organizations increasingly rely on digital transformation, cloud services, IoT ecosystems, and machine learning systems, the need for ultra-high-capacity storage continues to expand.

This drive enables efficient storage consolidation across enterprise environments by reducing the number of physical drives required to manage large datasets. This contributes to improved rack density, simplified infrastructure management, and optimized power and cooling efficiency within large-scale data centers.

Data Efficiency

With 18TB of storage capacity per drive, enterprises can significantly reduce the physical footprint required for large-scale storage systems. Fewer drives mean reduced hardware complexity, fewer points of failure, and simplified maintenance procedures in hyperscale environments.

This consolidation is particularly valuable for cloud providers, enterprise backup systems, and distributed storage architectures where scalability and efficiency are critical design requirements.

SAS 12Gbps Interface

The Western Digital 0B47747 utilizes a SAS 12Gbps interface designed for enterprise-grade storage communication. SAS technology is widely used in data center environments due to its reliability, scalability, and superior performance compared to traditional consumer storage interfaces.

SAS 12Gbps ensures high-speed, low-latency communication between storage devices and enterprise servers, enabling consistent throughput in demanding workloads such as virtualization, database operations, and cloud storage systems.

Data Transfer

Enterprise workloads require stable and continuous data transfer capabilities to support mission-critical operations. The SAS 12Gbps interface ensures efficient handling of large data streams, minimizing bottlenecks in high-demand environments.

This makes the drive suitable for applications such as distributed storage clusters, backup systems, and real-time data processing environments.

Enterprise RAID Compatibility

RAID configurations are widely used in enterprise storage systems for redundancy, performance, and fault tolerance. The SAS 12Gbps interface ensures seamless integration into RAID arrays such as RAID 5, RAID 6, and RAID 10.

The Ultrastar HC555 series is engineered to maintain consistent performance across RAID rebuilds and synchronized multi-drive operations, improving overall system reliability.

Performance

Operating at 7,200 RPM, the Western Digital 0B47747 Ultrastar DC HC555 drive delivers a balanced combination of performance, durability, and energy efficiency. This rotational speed is widely used in enterprise storage systems that prioritize reliability and sustained throughput over ultra-low latency.

The 7.2K RPM design is ideal for sequential workloads, large-scale storage arrays, backup systems, and archival environments where consistent performance is more important than peak speed.

Stable Enterprise Throughput

Enterprise systems often involve continuous data processing, backup scheduling, and file access operations. The 7.2K RPM speed ensures stable and predictable performance under these workloads.

This makes the drive suitable for cloud storage systems, virtualization repositories, and distributed file systems requiring consistent data access.

Cache Buffer

The 512MB cache buffer integrated into the Western Digital 0B47747 Ultrastar HC555 drive significantly enhances data handling efficiency by temporarily storing frequently accessed or in-flight data. This improves overall responsiveness in enterprise workloads involving repetitive read and write operations.

Data Access Efficiency

Cache memory allows the drive to reduce latency by storing active data requests in high-speed temporary storage before writing to or reading from the physical disk. This improves overall system responsiveness in enterprise environments.

Sector Format

The Western Digital 0B47747 supports 512e sector formatting, which provides compatibility with legacy systems while maintaining modern storage efficiency. It also includes Secure Erase (SE) functionality designed for enterprise data protection and lifecycle management.