The ThinkSystem RAID 940 family of PCIe 4.0 12 Gbps SAS RAID controllers are high-performance RAID-on-chip (ROC) adapters for connectivity to drives internal to the server. These adapters support RAID levels 0, 1, 10, 5, 50, 6 and 60, and include an extensive list of RAS and management features. This product guide provides essential presales information to understand the ThinkSystem RAID 940-8i, 16i and 32i adapters and their key features, specifications, and compatibility. This guide is intended for technical specialists, sales specialists, sales engineers, IT architects, and other IT professionals who want to learn more about the adapters and consider their use in IT solutions. Specification: Ports & interfaces Supported storage drive interfaces SAS Host interface PCI Express x8 PCI Express slots version 4.0 Performance RAID levels 0, 1, 5, 6, 10, 50, 60, JBOD Internal memory 8000 MB SSD support Yes RAID Level Migration Yes Number of devices supported 16 Data transfer rate 12 Gbit/s Certification USA (FCC 47 CFR part 15 Subpart B, class B) Canada (ICES -003, Class B) Taiwan (CNS 13438) Japan (VCCI V-3) Australia/New Zealand (AS/NZS CISPR 22) Korea (RRA no 2013-24 & 25) Europe (EN55022/EN55024) Safety: EN/ IEC/ UL 60950 RoHS WEEE Hot-swap Yes Compatible products SR665 (7D2W/7D2V), SR645 (7D2Y/7D2X) Harmonized System (HS) code 84733080 System requirements Compatible operating systems Microsoft Windows Server 2016 Microsoft Windows Server 2019 Red Hat Enterprise Linux 8.1 SUSE Linux Enterprise Server 12 SP5 SUSE Linux Enterprise Server 12 SP5 with Xen SUSE Linux Enterprise Server 15 SP1 SUSE Linux Enterprise Server 15 SP1 with Xen VMware vSphere Hypervisor (ESXi) 6.7 U3 VMware vSphere Hypervisor (ESXi) 7.0 Operational conditions Operating temperature (T-T) 10 - 55 °C Operating relative humidity (H-H) 20 - 80% Storage relative humidity (H-H) 5 - 95% Logistics data Harmonized System (HS) code 84733080 Other features Compatible operating systems Microsoft Windows Server 2016 Microsoft Windows Server 2019 Red Hat Enterprise Linux 8.1 SUSE Linux Enterprise Server 12 SP5 SUSE Linux Enterprise Server 12 SP5 with Xen SUSE Linux Enterprise Server 15 SP1 SUSE Linux Enterprise Server 15 SP1 with Xen VMware vSphere Hypervisor (ESXi) 6.7 U3 VMware vSphere Hypervisor (ESXi) 7.0