1. ATA
Most types of drives that are used by computer users are the type of ATA (or better known as IDE drives). Type ATA is based on 1986 standards by using 16-bit parallel and continues to grow with the addition of transfer speed and the size of a disk. Latest standard is ATA-7 which was first introduced in 2001 by the T13 committee (a committee responsible for determining the standard ATA). Type ATA-7 has a data transfer of 133 MB / sec. determined later during the year 2000 for the parallel ATA standard has a data rate of 133 MB / sec, parallel ATA, but there are many problems in terms of signal thymine, EMI (electromagnetic interference) and integrities data. Then the industry in trying to solve the problems caused by the parallel ATA and created a new standard called Serial ATA (SATA).
ATA (Advanced Technology Attachment) using a 16 bit parallel is used to control computer equipment, and has been in use for 18 years more as a standard. Differences SATA and ATA is the simple data cables and power are different.
ATA standard, such as the 200GB Western Digital model, have a two-inch ribbon cable with 40 pins and requires a data connection for each pin 5V from four pin connection. Meanwhile, like 120 GB SATA Western Digital model has a half-inch wide, 7 connector data connection is so much thinner and easier to manage cable data. SATA data cable has a maximum length of one meter (39.37 inches) longer than the ATA which is only 18 inches.
2. SATA
With 15 pin SATA power cable with a 250 mV, seemed to need more power in comparison with 4 pin ATA, but in fact the same. And SATA is the best ability is the achievement of maximum possible bandwidth that is equal to 150 MB / sec.
Other advantage of SATA is SATA is made with hot-swap capabilities so that it can shut off and turned on without shut down the computer system.
Whereas in the price, more expensive SATA drives a bit in comparison ATA drives, SATA described more advantages than in ATA connector, power, and most importantly performance. ATA standard has now started on the left and the producers chose the SATA standard.
IDE (Integrated Drive Electronics) is a standard interface between a computer motherboard data bus with disk storage. IDE interface is created based on the IBM PC Industry Standard Architecture (ISA) 16-bit bus. From the IDE interface is an interface for storage devices that can be integrated to disk or CD-ROM drive. Although the IDE is a general technology, most people use the term to refer to the IDE ATA specification. While AHCI (Advanced Host Controller Interface) is a hardware mechanism that allows software to communicate with SATA as host bus adapters that are designed for hot-plug-in as well as native command queuing (NCQ), which can increase the ability of computer / system / hard disk, especially in multi-tasking environment by allowing the drive to execute commands sent by the reading and writing at random with the aim to optimize the head movement in the reading process. AHCI has been supported by various operating systems like Windows Vista and Linux kernel 2.6.19.
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