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Overview
The Intel
RMS25CB040 are high-performance intelligent PCI Express* 3.0 compliant SAS/SATA
RAID controllers that offer reliability, high performance, and fault-tolerant disk
subsystem management. This is an ideal RAID solution that meets the internal storage
needs of workgroup, department, or enterprise systems to use with cost-effective SATA or
high performance SAS media.
As second generation PCI Express* storage controller, the Intel
Module RMS25PB080, RMS25PB040, RMS25CB080 and RMS25CB040 address the
growing demand for increased data throughput and scalability requirements across entry
level, midrange, and enterprise server platforms.
The Intel
SAS/SATA ports through two SFF-8087 Mini SAS x4 internal connectors, and the Intel
Integrated RAID Module MS25PB040 and RMS25CB040 control 4 internal SAS/SATA
ports through one SFF-8087 Mini SAS x4 internal connectors. For more information
about the use of expanders, see the ANSI SAS Standard, version 2.0 specification.
SATA and SAS are serial, point-to-point, device interfaces that use simplified cabling,
smaller connectors, lower pin counts, and lower power requirements than parallel SCSI.
The optional Intel
Free Backup Unit AXXRMFBU2 provides cached data protection for the RAID
controller, even during system failures.
Benefits of SAS and SATA
SAS is a serial, enterprise-level device interface that leverages the proven SCSI protocol
set. SAS is a convergence of the advantages of SATA, SCSI, and FC, and is the future
mainstay of the enterprise and high-end workstation storage markets. SAS offers a higher
bandwidth per pin than parallel SCSI and improves signal and data integrity.
The SAS interface uses the proven SCSI command set to ensure reliable data transfers,
while providing the connectivity and flexibility of point-to-point serial data transfers. The
serial transmission of SCSI commands eliminates clock skew challenges. The SAS
interface provides improved performance, simplified cabling, smaller connectors, lower
pin count, and lower power requirements than parallel SCSI.
SAS controllers leverage a common electrical and physical connection interface that is
compatible with Serial ATA technology. The SAS and SATA protocols use a thin, 7-wire
connector instead of the 68-wire SCSI cable or 40-wire ATA cable. The SAS/SATA
connector and cable are easier to manipulate, connect to smaller devices, and do not
Intel® Integrated RAID Module RMS25PB0x0 and RMS25CB0x0 Hardware User's Guide
®
Integrated RAID Module RMS25PB080, RMS25PB040, RMS25CB080 and
®
Integrated RAID Module RMS25PB080 and RMS25CB080 control 8 internal
®
RAID Smart Battery AXXRSBBU9 or Intel
®
Integrated RAID
®
RAID Maintenance
®
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