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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
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.
Advanced Host Controller Interface (AHCI) is an open host controller interface published and used by Intel, which has become a de facto standard. It allows the use of advanced features of SATA such as hotplug and native command queuing (NCQ).
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 ...
Advanced Host Controller Interface (AHCI) Enhanced Host Controller Interface (EHCI) Non-Volatile Memory Host Controller Interface (NVMHCI) Open Host Controller Interface (OHCI) Universal Host Controller Interface (UHCI) Wireless Host Controller Interface (WHCI) Extensible Host Controller Interface (XHCI)
Many newer chipsets support the Advanced Host Controller Interface (AHCI), which allows operating systems to universally control them and enable NCQ. DragonFly BSD has supported AHCI with NCQ since 2.3 in 2009. [4] [5] Linux kernels support AHCI natively since version 2.6.19, and FreeBSD fully supports AHCI since version 8.0.
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