Hardware User Guide

12Gb/s Intel® RAID Controllers User Guide 2
12Gb/s Intel
®
RAID Controllers with Support for RAID
Maintenance Free Back Units
The Intel
®
RAID Controllers RS3DC0x0, RS3SC008, RS3MC044, and RMS3CC080
support the RAID Maintenance Free Backup Unit that protects the integrity of the cached
data on Intel
®
Integrated RAID Modules by offloading the data stored in the RAM cache
to NAND flash during a power loss event. And it eliminates the need for lithium ion (Li-
ion) batteries traditionally used to protect DRAM cache memory on RAID controllers.
SAS/SATA Standards and Communication Protocols
The 12Gb/s Intel
®
RAID Controllers support the ANSI Serial Attached SCSI standard,
version 3.0. In addition, the controller supports the SATA III protocol defined by the
Serial ATA specification, version 3.0. Supporting both the SAS interface and the SATA
interface, the SAS controller is a versatile controller that provides the backbone of both
server and high-end workstation environments.
Each port on your RAID controller supports SAS devices, SATA devices, or both, by
using the following protocols:
• SAS Serial SCSI Protocol (SSP), which enables communication with other SAS
devices
• SATA, which enables communication with other SATA devices
• Serial Management Protocol (SMP), which communicates topology management
information directly with an attached SAS expander device
• Serial Tunneling Protocol (STP), which enables communication with SATA devices
through an attached expander
General Description
The 12Gb/s Intel
®
RAID Controllers bring 12.0 Gb/s Serial Attached SCSI and SATA III
performance to host adapter, workstation, and server designs. The 12Gb/s Intel
®
RAID
Controller RS3WC080 and Module RMS3HC080 are based on the LSISAS3008 PCIe
RAID On-a-Chip (ROC) device. The following Intel
®
RAID Controllers are based on the
LSISAS3108 PCIe RoC device:
• RS3DC080
• RS3DC040
• RS3SC008
• RS3MC044
• RMS3CC080