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As an interim resolution, Intel recommends changing the drive controller to AHCI or RAID before installing an operating system. [3] (It may also be necessary to load chipset-specific AHCI or RAID drivers at installation time, for example from a USB flash drive).
Up to version 4 it is included on Intel Application Accelerator RAID Edition, [2] between versions 5 and 8.9 it is included on Intel Matrix Storage Manager (IMSM), since version 9 it is included on Intel Rapid Storage Technology (IRST) preferring the driver modes to be named RST AHCI and RST AHCI RAID instead of Matrix RAID.
Officially only the ICH9R, ICH9DH, ICH9DO chip have AHCI support. This part has the following variants: 82801IB (ICH9) Base officially has neither AHCI or RAID support, but with a simple BIOS mod can add support for AHCI. [1] 82801IR (ICH9R) RAID with AHCI and RAID Support; 82801IH (ICH9DH) Digital Home with AHCI and no RAID Support
It often implements hardware RAID, thus it is sometimes referred to as RAID controller. It also often provides additional disk cache . Disk array controller is often ambiguously shortened to disk controller which can also refer to the circuitry responsible for managing internal disk drive operations.
In computer data storage, Smart Response Technology (SRT, also called SSD Caching before it was launched) is a proprietary caching mechanism introduced in 2011 by Intel for their Z68 chipset (for the Sandy Bridge–series processors), which allows a SATA solid-state drive (SSD) to function as cache for a (conventional, magnetic) hard disk drive (HDD).
For a short time in March 2010, users were led to believe that the Intel Rapid Storage Technology (RST) 9.6 (and later) drivers in Windows 7 supported TRIM on RAID volumes, but Intel later clarified that TRIM was supported for the BIOS settings of AHCI mode and RAID mode, but not if the drive was part of a RAID volume. [56]
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When enabled via the AHCI controller, this allows the SATA host bus adapter to enter a low-power state during periods of inactivity, thus saving energy. The drawback to this is increased periodic latency as the drive must be re-activated and brought back on-line before it can be used, and this will often appear as a delay to the end-user.