User Guide

©Copyright Lenovo 2022 4 ThinkSystem RAID 540-8i PCIe Gen4 12Gb Adapter
Chapter 1. Overview
The ThinkSystem RAID 540-8i PCIe Gen4 12Gb Adapter, based on the SAS3808 tri-mode controller, is a high-
performance PCIe-to-SATA/SAS storage adapter. 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
The following table summarizes key adapter features.
Table 1: Adapter Features
Adapter 540-8i
Ports
8 internal
I/O Processor SAS3808
Form Factor LP-MD2
Storage Interface Connectors One SFF-8654 x8
Host Interface x8 PCIe 4.0
Storage Interface SAS, SATA
Cache Memory —
Cache Protection
No
Super Capacitor —
RAID Features
The following list includes primary RAID features that the adapter supports.
•
RAID levels 0 and 1
•
RAID span 10
•
Online Capacity Expansion (OCE)
•
Auto resume after loss of system power during array rebuild or OCE
•
Single controller multipathing
•
Load balancing
•
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
•
Global and dedicated hot spare with revertible hot spare support
•
Automatic rebuild
–
Enclosure affinity
–
Emergency SATA hot spare for SAS arrays
–
Enclosure management
–
SCSI Enclosure Services (SES) (inband)
–
SGPIO (sideband) or I
2
C (UBM)
–
DataBolt bandwidth optimizer technology support for compatible expander-based enclosures
–
Shield state drive diagnostic technology