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The Advanced Host Controller Interface (AHCI) is a technical standard defined by Intel that specifies the register-level interface of Serial ATA (SATA) host controllers in a non-implementation-specific manner in its motherboard chipsets.
The Arts and Humanities Citation Index (AHCI), also known as Arts and Humanities Search, is a citation index, with abstracting and indexing for more than 1,700 arts and humanities academic journals, and coverage of disciplines that includes social and natural science journals.
The Académie Horlogère des Créateurs Indépendants (AHCI, English: "Academy of Independent Creators in Watchmaking") is a non-profit association, founded in 1985 by Svend Andersen and Vincent Calabrese under Swiss civil law. Its mission was to perpetuate the art of independent watch- and clock-making. The AHCI is based in Zürich. [1]
Intel Rapid Storage Technology (RST) is a driver SATA AHCI and a firmware-based RAID solution built into a wide range of Intel chipsets. Currently also is installed as a driver for Intel Optane temporary storage units. It contains two operation modes that follow two Intel specific modes rather than the SATA standard. The name modes and the ...
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.
[4] [5] Linux kernels support AHCI natively since version 2.6.19, and FreeBSD fully supports AHCI since version 8.0. Windows Vista and Windows 7 also natively support AHCI, but their AHCI support (via the msahci service) must be manually enabled via registry editing if controller support was not present during their initial install.
AHCI was developed when the purpose of a host bus adapter (HBA) in a system was to connect the CPU/memory subsystem with a much slower storage subsystem based on rotating magnetic media; as a result, AHCI has some inherent inefficiencies when applied to SSD devices, which behave much more like RAM than like spinning media. PCI Express using NVMe
Philippe Dufour, AHCI (born 1948) is a Swiss-born watchmaker from Le Sentier, Vallée de Joux. [1] He is regarded as a master of modern watchmaking, and his watches are referred as among the best ever made.