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UATA is a type of hard disk drive that uses Ultra Direct Memory Access (UDMA) for faster data transfer. It is a standalone device with an integrated controller, reducing compatibility issues with computer systems. UATA is commonly referred to as IDE HDDs, which use IDE to connect to the computer.
In computers, Ultra Advanced Technology Attachment (UATA) is a term used to describe a type of hard disk drive (HDD). HDDs are a non-volatile way of storing digitally encoded data. Non-volatile means that data remains on the HDD even when it is powered off, although data can only be retrieved when the HDD is powered. Conversely, a computer chip that stores volatile digital information loses that information when the device in which it is housed is turned off. Advanced Technology Attachment is a general class of HDD and Ultra distinguishes a more specific type of HDD from that general class.
UATA and ATA HDDs are more commonly referred to as IDE HDDs (Integrated Drive Electronics). In technical terms, IDE refers to the connection between the hard drive and the computer. Previously, a hard drive’s controller was located on a computer’s main circuit board or on an expansion card connected to a computer’s main circuit board. In contrast, the controller of an ATA/IDE hard drive is integrated into the HDD assembly itself. IDE is also used to distinguish the ATA/IDE class of HDDs from their predecessor HDDs.
The role of the controller is to manage the transfer of information from one part of a computer system to another part of the system. By relocating the controller, an ATA/IDE HDD can now be described as standalone. Now, a controller built into the UATA drive handles the data transfer instead of the controller found on the computer system it was connected to. This in turn has been seen to reduce compatibility issues between the data transfer methods of hard drives and computer systems. In UATA hard drives, AT refers to the use of IDE/ATA drives.
The U, or Ultra, indicates that a particular ATA/IDE HDD uses a data transfer method called Ultra Direct Memory Access (DMA), or UDMA for short. UDMA first appeared in 1998 and, at its peak speed, was twice as fast at transferring data at 33/MegaBits per second (MB/s) than DMA. DMA was a breakthrough in data transfer methods as it achieved faster transfer speeds by bypassing the Central Processing Unit and communicating directly with a computer’s memory for data transfer tasks. UATA hard drives currently using UDMA data transfer methods based on a technique called bus mastering can transfer data at a rate of 133MB/s. This is a relatively new technology that allows your computer to handle more than one task at a time without affecting the speed or result of each task.
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