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SAS Controller Descriptions 1-3
Copyright © 2009 by LSI Corporation. All rights reserved.
The SAS controllers support the ANSI Serial Attached SCSI standard,
version 2.0. In addition, the controller supports the SATA II protocol
defined by the Serial ATA specification, version 1.0a. Supporting both the
SAS interface and the SATA II interface, the SAS controller is a versatile
controller that provides the backbone of both server and high-end
workstation environments.
Each port on the SAS RAID controller supports SAS devices, SATA II
devices, or both, using the following protocols:
• SAS Serial SCSI Protocol (SSP), which enables communication with
other SAS devices
• SATA II, which enables communication with other SATA II 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
a SATA II device through an attached expander
1.2 SAS Controller Descriptions
The 6Gb/s SAS RAID controllers are described as follows:
• The MegaRAID SAS 9240-4i PCI Express 2.0 Low-Profile
Serial-Attached SCSI/SATA II Disk Array Controller is a PCI-Express
2.0, half-size, full-height RAID controller based on the LSISAS2008
PCI Express-SAS/SATA I/O Processor chip. The MegaRAID SAS
9240-4i controls four internal 6-Gb/s SAS/SATA ports through one
SFF-8087 x4 internal mini SAS connector.
• The MegaRAID SAS 9240-8i PCI Express 2.0 Low-Profile
Serial-Attached SCSI/SATA II Disk Array Controller is a PCI-Express
2.0, half-size, full-height RAID controller based on the LSISAS2008
PCI Express-SAS/SATA I/O Processor chip. The MegaRAID SAS
9240-8i controls eight internal 6-Gb/s SAS/SATA ports through two
SFF-8087 x4 internal mini SAS connectors.
• The MegaRAID 6Gb/s SAS 9260-4i PCI Express 2.0 Low-Profile
Serial-Attached SCSI/SATA II Disk Array Controller controls four
internal SAS/SATA ports through one SFF-8087 x4 internal mini
SAS connector.