Intel® 82801FR I/O Controller Hub 6 R, AHCI
Serial ATA (SATA) is the next-generation internal storage interconnect designed to replace parallel ATA technology. Serial ATA is the proactive evolution of the ATA interface from a parallel bus to a serial bus architecture. This architecture overcomes the electrical constraints that are increasing the difficulty of continued speed enhancements for the classic parallel ATA bus. Serial ATA has been introduced at 1.5 Gbps (150 Mbytes/sec), with a roadmap already planned to incorporate several speed doublings to support up to 10 years of storage evolution based on historical trends. Though Serial ATA will not be able to directly interface with legacy Ultra ATA hardware, it supports the ATA command protocols and thus is compatible with legacy software. Serial ATA specifications can be obtained at http://www.sata-io.org. Serial ATA was introduced into Intel’s desktop chipsets in 2003, along with the support of Serial ATA RAID. Intel® 82801FR I/O Controller Hub 6 R (ICH6R) continues support for RAID and will help further adoption of RAID in the desktop market. The ICH6R introduces new RAID capabilities along with some new Serial ATA specific features.
This performance brief introduces the ICH6R Advanced Host Controller Interface (AHCI) along with describing the new RAID capabilities that have been included in the chipset since the introduction of the Intel® 82801ER (ICH5R). The Intel® Matrix Storage Technology (Intel® MST) enabled by Intel® Application Accelerator 4.0 (IAA 4.0) software supports both the AHCI and RAID capabilities within the chipset. This document will outline what the new capabilities are within the chipset and how the software enables these features. While Intel® Application Accelerator 4.0 is not required for the ICH6R chipsets to function properly, the software does enable advanced RAID and AHCI features.
Read the full Intel® 82801FR I/O Controller Hub 6 R, AHCI Datasheet.