Lenovo ThinkSystem RAID 940-16i 8GB Flash PCIe Gen4 12Gb, Installation And User Manual

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© Copyright Lenovo 2020 ThinkSystem RAID 940-16i 8GB Flash PCIe Gen4 12Gb Internal Adapter Installation
and User Guide
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Chapter 1: Overview
The Thinksystem RAID 940-16i 8GB Flash PCIe Gen4 12Gb Internal Adapter, based on the SAS3916 tri-mode controller,
is a high-performance PCIe-to-SATA/SAS/PCIe (tri-mode) storage adapter. The tri-mode SerDes technology enables
operation of SAS, SATA, or PCIe (NVMe) storage devices in a single drive bay. A single controller can operate in all three
modes concurrently: SAS, SATA, and PCIe/NVMe. The adapter negotiates between the speeds and the protocols to
recognize and concurrently interface with these three storage devices types.
The adapter provides the following storage interface data transfer rates:
 SAS data transfer rates of 12Gb/s, 6Gb/s, and 3Gb/s per phy

SATA transfer rates at 6Gb/s and 3Gb/s per phy

PCIe (NVMe) data transfer rates of 16 GT/s, 8 GT/s, 5 GT/s, and 2.5 GT/s per lane
The following table summarizes key adapter features.
Table 1 Adapter Features
Adapter 940-16i
Ports 16 internal
I/O Processor SAS3916
Form Factor Custom
Storage Interface Connectors Four SFF-8654 x4
Host Interface
SFF-8654 x8
Storage Interface SAS, SATA, and PCIe (NVMe)
Cache Memory 8 GB, 2666 MT/s, DDR4 SDRAM
Cache Protection Yes
Super Capacitor CVPM05 module
1.1 RAID Features
The following list includes primary RAID features that the adapter supports.
 RAID levels 0, 1, 5, and 6
 RAID spans 10, 50, and 60

JBOD mode with RAID0, RAID1, and RAID10
 JBOD for SDS environments

Online Capacity Expansion (OCE)

Auto resume after loss of system power during array rebuild or OCE
 Single controller multipathing

Load balancing

Configurable stripe size up to 1 MB
 Fast initialization for quick array setup

Check Consistency for background data integrity

SSD support with SSD Guard™ technology

Patrol read for media scanning and repairing

Disk data format (DDF)-compliant Configuration on Disk (COD)
 Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T) support