Lenovo ThinkSystem S4520 960GB 3.5" SATA 6Gb/s Read Intensive SSD

Overview

The Lenovo 4XB7A77456 is a 3.5-inch SATA solid state drive designed to provide 960 GB of storage optimized for read-intensive workloads. It is ideal for ThinkSystem servers and other compatible systems that require reliable and fast data access. With a 6 Gb/s SATA interface, it delivers up to 550 MB/s sequential read speeds and 510 MB/s sequential write speeds, making it well suited for accelerating boot times, application loading, and data retrieval in demanding environments.

Key features

• Uses 3D TLC NAND technology to balance cost and performance for read-heavy applications.
• Supports high random IOPS with up to 90,000 for 4 KB reads and 43,000 for writes, ensuring responsiveness under mixed workloads.
• Hardware-based 256-bit AES encryption protects sensitive data without impacting performance.
• End-to-end data path protection prevents silent data corruption, enhancing reliability.
• Enhanced Power Loss Protection safeguards data integrity during unexpected power outages.
• Thermal throttling maintains stable performance in dense server environments.
• Rated for 3 drive-writes-per-day endurance, providing confidence for frequent read cycles and moderate write activity.
• 3.5-inch form factor allows easy installation in ThinkSystem servers and other compatible chassis.

Key specs

• Capacity: 960 GB
• Form factor: 3.5-inch
• Interface: SATA 6 Gb/s
• Sequential read speed: up to 550 MB/s
• Sequential write speed: up to 510 MB/s
• Random read IOPS (4 KB): up to 90,000
• Random write IOPS (4 KB): up to 43,000
• Encryption: 256-bit AES hardware-based
• Endurance: 3 drive-writes per day

Connectivity and compatibility

This SSD connects via a standard SATA 6 Gb/s interface, ensuring broad compatibility with ThinkSystem servers and other systems that support 3.5-inch SATA drives. Its form factor and interface make it a straightforward upgrade option for existing server storage configurations without requiring changes to the storage architecture.

Performance and reliability

Designed to handle read-intensive workloads, this drive excels in environments where fast data access and consistent performance are critical. Its high IOPS rates support virtual machines, analytics, and content delivery services during peak usage. Built-in encryption and power loss protection features provide peace of mind for sensitive data and mission-critical applications, while thermal management helps maintain stable operation in server racks.

Ideal uses and environments

This SSD is a strong choice for IT administrators managing database servers, hyper-converged infrastructure, or edge computing appliances that prioritize read performance and data protection. It fits well in setups where moderate write activity is expected but consistent and reliable read speeds are essential to maintain system responsiveness and uptime.