Lenovo ThinkSystem RAID 940-32i PCIe 4.0 12Gb SAS Controller

The Lenovo 4Y37A09733 is a ThinkSystem RAID 940-32i controller that delivers dependable hardware RAID and rapid drive connectivity for enterprise servers. Installed in a PCIe 4.0 x8 slot, it moves data at up to 12 gigabits per second, so workloads such as backups, analytics, and virtual machine storage keep pace with modern processor speeds.

The card supports up to 32 SAS or SATA drives, giving administrators wide freedom to build arrays that match a specific mix of performance and redundancy. Available RAID levels include 0, 1, 5, 6, 10, 50, and 60. An 8 GB flash cache accelerates reads and writes, while CacheVault protection secures that cache during unexpected power loss, preserving transactions until the system is back online.

Inside a virtualization cluster, the controller shortens boot times and improves virtual machine responsiveness. In database or analytics nodes, its sustained throughput helps queries finish sooner. It also fits branch offices that need local storage with enterprise reliability but limited on-site maintenance.

S.M.A.R.T. monitoring flags potential drive issues early, and broad operating system support that includes Windows Server, Red Hat Enterprise Linux, and VMware makes integration straightforward. For data centers that demand speed, flexibility, and strong data protection, this Lenovo controller offers a practical, scalable path forward.

Highlights:

• PCIe 4.0 x8 host interface for high bandwidth
• Works with SAS or SATA drives in internal server bays
• Supports RAID 0, 1, 5, 6, 10, 50, and 60 for flexible protection
• 12 Gbit/s per SAS lane keeps data flowing quickly
• 8 GB onboard flash cache enhances read and write performance
• Connects up to 32 storage devices for large arrays
• CacheVault flash protection maintains cache contents during power loss
• Compatible with Windows Server, Red Hat Enterprise Linux, VMware, and other major enterprise operating systems