IDE and ATA are the two names for one similar process, IDE stands for integrated drive electronics. The IDE's are developed during the (1980) to (1990) where ATA technologies are still in progress. But today we have hard driver with are standard storage capacity and advanced data, transfer techniques due to the improvement in ATA technologies.

Using ATA(Advanced Technology Attachment). The ATA is further classified into three types.

  1. SATA(serial ATA)
  2. PATA(parallel ATA)
  3. SATA II(advanced version of SATA 1).

What is SATA?

The serial ATA(serial advanced technology attachment ), or “SATA computer bus is a storage interface for connecting host bus adapters to mass storage device such as hard disk drivers and optional drivers.” It is a evolutionary replacement for parallel ATA.

It is integrated into almost all modern consumer laptop, computers and desktop motherboards.

The serial ATA was designed to replace older ATA standard also known as EIDE.

EIDE (enhanced integrated drive electronic). The EIDE's are included most of the features of the forthcoming ATA-2 Specifications, and several additional enhancements.

The SATA adapters were released in the public market between the last quarter of (2002) and the first quarter of (2003).

SATA is able to use the same low level commands, but serial ATA host adapters and devices communicate via a high speed serial cable over two pairs of conductor .

Serial ATA (SATA is used to transfer of data to and from a hard disk), it is successor to the legacy advanced technology attachment Standard SATA interface uses 7 pin cable for the data connection, and transmit the data serially rather than in parallel, in addition serial ATA should give user the ability to hot swap hard disk drives.

This adds a capability that more expensive system such as SCSI and fibre channel has for a long time, through the future will tell how widely users exist that aspect of the technology.

IDE and ATA are the Two names for one similar process, IDE stands for integrated drive electronics. The IDE's are developed during the (1980) to (1990) where ATA technologies are still in progress. But today we have hard driver with are standard storage capacity and advanced data, transfer techniques due to the improvement in ATA technologies.

Pinning details of SATA:

Pin function

GND Ground

A+ Transmit

A- Transmit

GND Ground

B+ Receiver

B- Receiver

GND Ground

Coding notch

The serial ATA(SATA) bus is defined over two separate connectors, one connector for the data lines, and one for the power lines (SATA power Pin out).

SATA signal names are with respect to the host. Transmit pins connect to receive pins on the other device. The SATA connector is keyed at pin 1.SATA uses a 4 conductor cable with two different pairs (transmitter/receiver), plus an additional ‘3' Ground pins and a separate power connector.

SATA runs 150mbps, 300mbps (SATA II) or 600mbps transfer rates, faster SATA implementations are backward compatible with older devices.

Serial ATA also reduces the signalling voltage from the 5 volts used in PATA down to 0.5 volts, which reduces power consumption & electrical interference, due to serial transfer and lower power the maximum allowable length of SATA cables exceeds of ATA ribbon cables.

SATA's longer and thinner cabling requirements without having to purchase new hard drivers. When looking at the hardware for serial connections, one can easily see the differences between it and parallel ATA, without the first introduction of Serial ATA, the maximum transfer rate is 150mbps/sec. This is supported to increase every 3 years with a maximum transfer of 300mb/sec in 2005 and 600mb/sec in 2008. Finally serial ATA doesn't require any changes to existing operating systems for implementation, serial ATA is 100% software compatibility and, with serial ATA adapters, some hardware doesn't have to immediately replace.

Parameters serial ATA

Maximum speed 150mb/s currently 300mb/s by

2005 and 600mb/s by 2008

Cable length 1 meter (about 40 inches)

Cable pins 7

Power connector pins 15

Data transfer wires used 2

Power consumption 250 mv

Hot swappable yes

Throughput:

The current SATA specifications detail data transfer rates as high as 6.0Gbs per device.

SATA uses only 4 signal line cables are more compact and cheaper than PATA. SATA support hot swapping and NCQ.

SATA 1.5 Gbit/s(first generation)

SATA 3G bit/s(second generation)

SATA II committee renamed SATA 10

SATA II product marketing.

The current S

What is PATA?

Parallel ATA (Parallel Advanced Technology Attachment) is an interface standard for connection of storage devices like a (hard disk, CDROM, and solid state devices), and other devices in computer for well over decade.

The original ATA was retroactively renamed parallel ATA, the standard used is basically AT attachment packet interface or ATAPI standard.

Parallel ATA is to developed from IDE, from introduction of Serial ATA in (2003) the use of parallel ATA has declined in use since. PATA is still use in many personal computers but seems to be absolute in a few years. Parallel ATA only allows cable length up to 18 pin(460mm) because of this length limit the technology normally appear as an internal computer storage interface.