Lenovo ThinkSystem RAID 940-8i 4GB Flash PCIe Gen4 12Gb Adapter

Overview

The Lenovo 4Y37A09728 is a RAID adapter designed for ThinkSystem servers that require high-speed data transfer and robust protection. It connects via a PCIe 4.0 x8 interface and supports eight internal SAS ports running at up to 12 Gb per second, enabling fast and efficient handling of large databases, virtual machines, and file servers. With a 4 GB flash-backed cache, it safeguards data during unexpected power outages, ensuring write operations are preserved and completed safely.

Key features

• High-speed 12 Gb per second SAS controller that accelerates data throughput for demanding server workloads
• Eight internal SAS ports allowing direct connection to drives or expanders for flexible storage configurations
• Comprehensive RAID support including RAID 0, 1, 5, 6, 10, 50, 60, and JBOD to balance performance and redundancy based on your needs
• 4 GB flash-backed cache that protects write data during power interruptions, reducing risk of data loss and lengthy rebuilds
• Compatibility with Windows Server, major Linux distributions, and VMware ESXi for seamless integration into diverse IT environments
• RoHS compliance ensuring environmentally responsible deployment without compromising performance
• Backed by a Lenovo one-year limited warranty for dependable support and peace of mind

Key specs

• Interface: PCIe 4.0 x8
• SAS ports: 8 internal
• Data transfer rate: up to 12 Gb per second per port
• Cache: 4 GB flash-backed
• RAID levels supported: 0, 1, 5, 6, 10, 50, 60, JBOD
• Operating system compatibility: Windows Server, Linux distributions, VMware ESXi
• Compliance: RoHS
• Warranty: Lenovo 1-year limited

Connectivity and compatibility

This RAID adapter fits into a PCIe 4.0 x8 slot, providing ample bandwidth for high-speed data transfers. Its eight internal SAS ports support direct-attach drives or SAS expanders, offering flexibility in storage expansion. The adapter integrates smoothly with popular server operating systems, including Windows Server, various Linux distributions, and VMware ESXi, making it suitable for a wide range of enterprise environments.

Performance and reliability

The 4 GB flash-backed cache is a critical feature that protects data integrity during unexpected power failures by preserving write operations until power is restored. This reduces downtime and the risk of data corruption, which is essential for business-critical applications. The broad RAID level support allows administrators to tailor data protection and performance to specific workloads, whether prioritizing speed, redundancy, or a balance of both.

Ideal uses and environments

This RAID adapter is well suited for IT professionals managing ThinkSystem servers that handle intensive workloads such as large databases, virtualization, and file serving. It offers a practical upgrade path for systems needing higher throughput than onboard controllers can provide, while maintaining strong data protection. Its compatibility and robust features make it a strong choice for enterprise data centers, remote offices, and any environment where uptime and data integrity are priorities.