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CTL-I (Controller Interface) [3] was an 8-bit word serial interface introduced by IBM for its mainframe hard disk drives beginning with the 3333 in 1972. [4] The 3333 was the first unit in a string of up to eight 3330 type hard disk drives ; it contained a CTL-I controller and two 3330 type disk drives.
A 3.5-inch Serial ATA hard disk drive A 2.5-inch Serial ATA solid-state drive. SATA was announced in 2000 [4] [5] in order to provide several advantages over the earlier PATA interface such as reduced cable size and cost (seven conductors instead of 40 or 80), native hot swapping, faster data transfer through higher signaling rates, and more efficient transfer through an (optional) I/O queuing ...
Hence, its protocol is usually ATA (a.k.a. PATA), SATA, SCSI, FC or SAS. The front-end interface communicates with a computer's host adapter (HBA, Host Bus Adapter) and uses: one of ATA, SATA, SCSI, FC; these are popular protocols used by disks, so by using one of them a controller may transparently emulate a disk for a computer.
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.
Many device interfaces or protocols (e.g., SATA, USB, SAS, PCIe) are used both inside many-device boxes, such as a PC, and one-device-boxes, such as a hard drive enclosure. Accordingly, this page lists both the internal ribbon and external communications cable standards together in one sortable table.
Available in capacities between 40 GB and 500 GB, with either ATA/100 or SATA 3 Gbit/s interfaces and 2 MB, 8 MB or 16 MB of cache, depending on the model. All SATA models were available with new 3 Gbit/s interface (1,5 Gbit/s mode is available via jumper). Seagate announced launch of Barracuda 7200.9 on June 8, 2005. [32]
The exact reordering algorithm may depend upon the controller and the drive itself, but the host computer simply makes requests as needed, leaving the controller to handle the details. This queuing mechanism is sometimes referred to as " elevator seeking ", as the image of a modern elevator in a building servicing multiple calls and processing ...
With the Intel 5 Series chipset in 2008, the southbridge became redundant and was replaced by the Platform Controller Hub (PCH) architecture introduced. AMD did the same with the release of their first APUs in 2011, naming the PCH the fusion controller hub (FCH), which was only used on AMD's APUs until 2017 when it began to be used on AMD's Zen ...