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Ultra ata

ultra ata

Ultra ATA is an older connection type which is more commonly referred to as PATA or IDE. It is a connection type that uses parallel lanes of data communication. Ultra ATA, abbreviated UATA, is a designation that has been primarily used by Western Digital for different speed enhancements to the. Get the best deals on Ultra Ata Hard Drive and find everything you'll need to improve your home office setup at Fast & Free shipping on many. DELL PRECISION T3500 Support ID - with five dozen. This gives me the diversity of warns about the up equipment, work emails and updating above, in order or the remote and personal information. If you connected affordable plans for so how to solve this.

Name required. Email required. Please note: comment moderation is enabled and may delay your comment. There is no need to resubmit your comment. Notify me of followup comments via e-mail. Written by : Ian. User assumes all risk of use, damage, or injury. You agree that we have no liability for any damages. Summary: 1. Author Recent Posts. Latest posts by Ian see all. Help us improve. Rate this post! Cancel Reply. ATA Advanced Technology Attachment refers to a common standard used to connect hard drives and other storage devices to a motherboard.

There are several buzzwords surrounding this technology that can make it a little confusing for consumers, but each buzzword refers to an aspect of the standard. It is written around a specification that allows a hard disk or drive to transfer data directly to the computer's system memory without having to use the CPU to direct this action. Most people are familiar with these wide, flat IDE cables that connect the drives to the motherboard. This last is the fastest, with a transfer rate of megabytes per second , roughly comparable to the earliest version of SATA.

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A faster strobe means faster data transfer, but as the strobe rate increases, the system becomes increasingly sensitive to electro-magnetic interference EMI, also known as signal interference or noise which can cause data corruption and transfer errors. ATA-4 includes Ultra ATA which, in an effort to avoid EMI, makes the most of existing strobe rates by using both the rising and falling edges of the strobe as signal separators. Thus twice as much data is transferred at the same strobe rate in the same time period.

To eliminate this increase in EMI, a new pin, conductor cable was developed. This cable adds 40 additional grounds lines between each of the original 40 ground and signal lines. The additional 40 lines help shield the signal from EMI. This increased higher burst data transfer rates to a maximum MBps by reducing its signal voltage — and associated timing requirements — from 5V to 3.

The table below shows that several components have improved with the evolution of the ATA interface, realising progressive speed and functionality gains since the first ATA specification was introduced in It's interesting to note that the first optical storage medium made available to the public was the now-familiar audio … [Read More Known to belong to the list of browser hijacker, Speedial, can infect your computer system through entertaining free downloads promoted online and … [Read More People have been jailbreaking iOS devices for quite some time in an attempt to make them more useful for their specific needs.

Internally, the connectors are different; the connectors for the conductor cable connect a larger number of ground conductors to the ground pins, while the connectors for the conductor cable connect ground conductors to ground pins one-to-one.

The gray connector on conductor cables has pin 28 CSEL not connected, making it the slave position for drives configured cable select. The image on the right shows PATA connectors after removal of strain relief, cover, and cable. Pin one is at bottom left of the connectors, pin 2 is top left, etc.

The connector is an insulation-displacement connector : each contact comprises a pair of points which together pierce the insulation of the ribbon cable with such precision that they make a connection to the desired conductor without harming the insulation on the neighboring conductors. The center row of contacts are all connected to the common ground bus and attach to the odd numbered conductors of the cable. The top row of contacts are the even-numbered sockets of the connector mating with the even-numbered pins of the receptacle and attach to every other even-numbered conductor of the cable.

The bottom row of contacts are the odd-numbered sockets of the connector mating with the odd-numbered pins of the receptacle and attach to the remaining even-numbered conductors of the cable. Note the connections to the common ground bus from sockets 2 top left , 19 center bottom row , 22, 24, 26, 30, and 40 on all connectors. Also note enlarged detail, bottom, looking from the opposite side of the connector that socket 34 of the blue connector does not contact any conductor but unlike socket 34 of the other two connectors, it does connect to the common ground bus.

On the gray connector, note that socket 28 is completely missing, so that pin 28 of the drive attached to the gray connector will be open. On the black connector, sockets 28 and 34 are completely normal, so that pins 28 and 34 of the drive attached to the black connector will be connected to the cable. Pin 28 of the black drive reaches pin 28 of the host receptacle but not pin 28 of the gray drive, while pin 34 of the black drive reaches pin 34 of the gray drive but not pin 34 of the host.

Instead, pin 34 of the host is grounded. The standard dictates color-coded connectors for easy identification by both installer and cable maker. All three connectors are different from one another. The blue host connector has the socket for pin 34 connected to ground inside the connector but not attached to any conductor of the cable.

Since the old 40 conductor cables do not ground pin 34, the presence of a ground connection indicates that an 80 conductor cable is installed. The conductor for pin 34 is attached normally on the other types and is not grounded. Installing the cable backwards with the black connector on the system board, the blue connector on the remote device and the gray connector on the center device will ground pin 34 of the remote device and connect host pin 34 through to pin 34 of the center device.

The gray center connector omits the connection to pin 28 but connects pin 34 normally, while the black end connector connects both pins 28 and 34 normally. If two devices are attached to a single cable, one must be designated as Device 0 in the past, commonly designated master and the other as Device 1 in the past, commonly designated as slave. This distinction is necessary to allow both drives to share the cable without conflict.

In most personal computers the drives are often designated as "C:" for the Device 0 and "D:" for the Device 1 referring to one active primary partitions on each. The terms device and drive are used interchangeably in the industry, as in master drive or master device. The mode that a device must use is often set by a jumper setting on the device itself, which must be manually set to Device 0 Master or Device 1 Slave. If there is a single device on a cable, it should be configured as Device 0.

However, some certain era drives have a special setting called Single for this configuration Western Digital, in particular. Also, depending on the hardware and software available, a Single drive on a cable will often work reliably even though configured as the Device 1 drive most often seen where an optical drive is the only device on the secondary ATA interface. The words primary and secondary typically refers to the two IDE cables, which can have two drives each primary master, primary slave, secondary master, secondary slave.

A drive mode called cable select was described as optional in ATA-1 and has come into fairly widespread use with ATA-5 and later. A drive set to "cable select" automatically configures itself as Device 0 or Device 1 , according to its position on the cable. Cable select is controlled by pin The host adapter grounds this pin; if a device sees that the pin is grounded, it becomes the Device 0 device; if it sees that pin 28 is open, the device becomes the Device 1 device.

Note that if two drives are configured as Device 0 and Device 1 manually, this configuration does not need to correspond to their position on the cable. Pin 28 is only used to let the drives know their position on the cable; it is not used by the host when communicating with the drives. With the conductor cable, it was very common to implement cable select by simply cutting the pin 28 wire between the two device connectors; putting the Device 1 device at the end of the cable, and the Device 0 on the middle connector.

This arrangement eventually was standardized in later versions. If there is just one device on a 2-drive cable, using the middle connector, this results in an unused stub of cable, which is undesirable for physical convenience and electrical reasons. The stub causes signal reflections , particularly at higher transfer rates. So, if there is only one Device 0 device on a two-drive cable, using the black connector, there is no cable stub to cause reflections.

Also, cable select is now implemented in the device 1 device connector, usually simply by omitting the contact from the connector body. The parallel ATA protocols up through ATA-3 require that once a command has been given on an ATA interface, it must complete before any subsequent command may be given. A useful mental model is that the host ATA interface is busy with the first request for its entire duration, and therefore can not be told about another request until the first one is complete.

The function of serializing requests to the interface is usually performed by a device driver in the host operating system. The ATA-4 and subsequent versions of the specification have included an "overlapped feature set" and a "queued feature set" as optional features, both being given the name " Tagged Command Queuing " TCQ , a reference to a set of features from SCSI which the ATA version attempts to emulate. However, support for these is extremely rare in actual parallel ATA products and device drivers because these feature sets were implemented in such a way as to maintain software compatibility with its heritage as originally an extension of the ISA bus.

This implementation resulted in excessive CPU utilization which largely negated the advantages of command queuing. By contrast, overlapped and queued operations have been common in other storage buses; in particular, SCSI's version of tagged command queuing had no need to be compatible with APIs designed for ISA, allowing it to attain high performance with low overhead on buses which supported first party DMA like PCI.

This has long been seen as a major advantage of SCSI. The Serial ATA standard has supported native command queueing NCQ since its first release, but it is an optional feature for both host adapters and target devices.

There are many debates about how much a slow device can impact the performance of a faster device on the same cable. There is an effect, but the debate is confused by the blurring of two quite different causes, called here "Lowest speed" and "One operation at a time". On early ATA host adapters, both devices' data transfers can be constrained to the speed of the slower device, if two devices of different speed capabilities are on the same cable.

This allows each device on the cable to transfer data at its own best speed. Even with earlier adapters without independent timing, this effect applies only to the data transfer phase of a read or write operation. This is caused by the omission of both overlapped and queued feature sets from most parallel ATA products. Only one device on a cable can perform a read or write operation at one time; therefore, a fast device on the same cable as a slow device under heavy use will find it has to wait for the slow device to complete its task first.

However, most modern devices will report write operations as complete once the data is stored in their onboard cache memory, before the data is written to the slow magnetic storage. This allows commands to be sent to the other device on the cable, reducing the impact of the "one operation at a time" limit.

The impact of this on a system's performance depends on the application. For example, when copying data from an optical drive to a hard drive such as during software installation , this effect probably will not matter. Such jobs are necessarily limited by the speed of the optical drive no matter where it is.

But if the hard drive in question is also expected to provide good throughput for other tasks at the same time, it probably should not be on the same cable as the optical drive. ATA devices may support an optional security feature which is defined in an ATA specification, and thus not specific to any brand or device.

The security feature can be enabled and disabled by sending special ATA commands to the drive. If a device is locked, it will refuse all access until it is unlocked. There is a Master Password identifier feature which, if supported and used, can identify the current Master Password without disclosing it. A device can be locked in two modes: High security mode or Maximum security mode.

There is an attempt limit, normally set to 5, after which the disk must be power cycled or hard-reset before unlocking can be attempted again. In Maximum security mode, the device can be unlocked only with the User password. While the ATA lock is intended to be impossible to defeat without a valid password, there are purported workarounds to unlock a device. Due to a short cable length specification and shielding issues it is extremely uncommon to find external PATA devices that directly use PATA for connection to a computer.

A device connected externally needs additional cable length to form a U-shaped bend so that the external device may be placed alongside, or on top of the computer case, and the standard cable length is too short to permit this. For ease of reach from motherboard to device, the connectors tend to be positioned towards the front edge of motherboards, for connection to devices protruding from the front of the computer case.

This front-edge position makes extension out the back to an external device even more difficult. Ribbon cables are poorly shielded, and the standard relies upon the cabling to be installed inside a shielded computer case to meet RF emissions limits. External hard disk drives or optical disk drives that have an internal PATA interface, use some other interface technology to bridge the distance between the external device and the computer.

USB is the most common external interface, followed by Firewire. No interfacing chips or circuitry are required, other than to directly adapt the smaller CF socket onto the larger ATA connector. The ATA connector specification does not include pins for supplying power to a CF device, so power is inserted into the connector from a separate source. CF devices can be designated as devices 0 or 1 on an ATA interface, though since most CF devices offer only a single socket, it is not necessary to offer this selection to end users.

Although CF can be hot-pluggable with additional design methods, by default when wired directly to an ATA interface, it is not intended to be hot-pluggable. The following table shows the names of the versions of the ATA standards and the transfer modes and rates supported by each.

Note that the transfer rate for each mode for example, This is simply two bytes multiplied by the effective clock rate, and presumes that every clock cycle is used to transfer end-user data. In practice, of course, protocol overhead reduces this value. Congestion on the host bus to which the ATA adapter is attached may also limit the maximum burst transfer rate.

Hard drive performance under most workloads is limited first and second by those two factors; the transfer rate on the bus is a distant third in importance. This is a bit CRC, and it is used for data blocks only. Transmission of command and status blocks do not use the fast signaling methods that would necessitate CRC.

It specifies provisions in the BIOS of a personal computer to allow the computer to be bootstrapped from devices such as Zip drives , Jaz drives , SuperDisk LS drives, and similar devices. These devices have removable media like floppy disk drives , but capacities more commensurate with hard drives , and programming requirements unlike either.

However, existing BIOS standards did not support these devices. Usually an ARMD device is configured earlier in the boot order than the hard drive. Originally ARMD caused the devices to appear as a sort of very large floppy drive, either the primary floppy drive device 00h or the secondary device 01h. Some operating systems required code changes to support floppy disks with capacities far larger than any standard floppy disk drive.

Also, standard-floppy disk drive emulation proved to be unsuitable for certain high-capacity floppy disk drives such as Iomega Zip drives. This permitted the established block protocol to be reused in storage area network SAN applications. From Wikipedia, the free encyclopedia. Interface standard for the connection of storage devices. This article is about the computer storage adapter. For the telephone adapter, see Analog telephone adapter. For other uses, see Eide disambiguation.

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Operating a RAID controller (Ultra ATA 133) with two HDs: one 133, the other 100

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