Chapter 1: Overview; Raid Features - Lenovo ThinkSystem RAID 940-16i Installation And User Manual

Chapter 1: Overview

The Thinksystem RAID 940-16i 8GB Flash PCIe Gen4 12Gb 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
Ports
I/O Processor
Form Factor
Storage Interface Connectors
Host Interface
Storage Interface
Cache Memory
Cache Protection
Super Capacitor
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)
©Copyright Lenovo 2020
940-16i
16 internal
SAS3916
LP-MD2
Two SFF-8654 x8
x8 PCIe 4.0
SAS, SATA, and PCIe (NVMe)
8 GB, 2666 MT/s, DDR4 SDRAM
Yes
CVPM05 module
ThinkSystem RAID 940-16i 8GB Flash PCIe Gen4 12Gb Adapter Installation and User Guide
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