The IDE Hardisk

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Integrated Drive Electronics (IDE) hard disks have been around for quite a few years.  Prior to these drives, hard disks were interfaced to a PC motherboard via an extension board known as a hard disk controller.  The drive did most of the mechanical stuff and performed essential electronic/servo functions; the controller told it in detail what to do.  The development of the IDE hard moved most of the electronics and firmware (low-level software on a chip) from the controller to a printed circuit board on the drive itself.  In the process, a buffer/cache’ memory was added to the electronics to speed-up the process of reading and writing hard disk drive data.  The drive got “smarter.”  Overall costs went down and performance went up.
A much simpler board, usually identified as an IDE Controller, interfaced the IDE hard disk to the motherboard bus.  The term IDE Controller is a misnomer.  It is really nothing more than a bus interface and an interface and connector for the IDE cable going to the drive.  The actual controller is on the drive.  

Secure Erase Program

If the user is smart enough to go through the Storage Bits it is safe to them to play along with the Secure Erase program safe. In this program, secure erase, it overwrites ivery single block on the hard drive. Even those data on the bad blocks are being overwritten. The information left at the end is partly overwritten directories and blocks. Remember there is no data recovery from Secure Erase!

The National Security Agency together with the National Institue for Standards and Testing gave the Secure Erase, complying with legal requirements, a higher Security rating than external block overwrite software that is available anywhere in the market.

Know the Measurement Jargon

Somebody once told me that a man�s thing is proportional to the size of his hard disk. That�s totally untrue but it is definitely true that size does matter. Sometimes, during some intellectual boastful conversation, one may actually say a quarter of terabyte instead of 250 gigabytes to make it sound more size-monster.

The capacity of early hard disks is quoted as megabytes. A megabyte can store up to 1,048,576 or 2²⁰ bytes. Today, hard disks are commonly in gigabytes. Gigabytes is equal to 1,073,741,824 or 2³⁰ bytes of computer storage. Byte, on the other hand is equal to eight bits. A bit is a binary digit, taking up the values of either 1 or 0.

Formatting Hard Drive Myths part 1

Formatting the hard drive of the PC will not diminish its lifespan. It was said that formatting is the most commonly myth to reduce the hard disk’s lifespan.
Formatting is not a hectic job for your hard disks because the read and write heads of the hard disk do not make contact to the platter surface. Platter may only be damaged once there it as strike during the operation.

In contrast, it is allowed to format the hard drive approximately twenty times a day the whole year and it will not likely to fail compare to a hard drive that hasn’t formatted at all.

Deleting in Hard Disk

By now you might know that “deleting” a file does nothing of the sort. However deleting a file on the disk drive disk drive has a built-in system for the secure erasure of data?
A directory in the hard disk is programmed in the system where the file data can be found. The delete process, all it does is to erase the file’s reference information. The operating system can not find it, but the data is still present at the hard drive.

The File recovery function is up to this task. This program looks for the data in the block directory. If the PC is keeping confidential data on business, medial, and other personal financial information a simple deleting command is not enough when disposing the equipment.

JTS Corporation

JTS corporation, which is base on San Jose, California, was a producer of IDE hard drive for personal computers. In 1994 Jugi Tandon founded JTS Corporation. The company originally concentrated in making on a new 3″ form-factor drive for laptops. The three inches feature accepted a larger drive storage capacity for laptops with their technology.

Compaq Computers was qualified JTS’s drives and incorporate it with their laptops. They became the supplier of bargain basement priced with good-performance hard drives with 5400 RPM. They produced their product in the southern part suburb of Madras City. In this case reputations on products were noticeable. Upon merging with Atari on February 1996, and getting cash from it, JTS filed for Bankruptcy by December 1998.

Conner Peripherals

Conner Peripherals was known in developing hard drives for personal computers. It was founded in 1986. Finis Conner, John Squires, and Terry Johnson founded the company.

Their first milestone was in 1990 where they set a record of almost 1.337 billion in sales spanning in four years. They were recognized as the fastest growing manufacturing in the United States. Also, they were first of many companies to produce IDE specified hard drives. In 1990 Seagate buy them out. Conner peripherals also started to make tape drives during 1993. In 1998, the company shut down the operation when they can not meet the low-cost demand from the suppliers.

Computer Memories Inc.

Computer Memories Inc. of CMI was started its manufacturing of hard drives during the early 1980’s. Their first office was located at Chatsworth, California. They develop economical stepper-motor drives.

During the existence they have contracted by the IBM PC/AT as sole producer of 20-Mega Byte hard disk. It was called the CM600 Series. However, it reported that delivery was a failure and the hard drives itself was found lots of shortcoming. Beside CMI was sued by Quantum for a patent infringement. CMI announce their patent-free hard drives in 1986, yet they didn’t recover from the IBM argument. Thus, announcing their exit in hard drive manufacturing business in 1986.

Data Transfer Rates

Data written on a hard drive is encoded not as human readable language but rather a series of 1s and 0s that represent a Bit or Binary Digit. This is the only language that the computer understands that is why it is commonly referred to as machine language. Commonly, files have a property size of xx KB (kilobytes) or xx Byte, a byte consists of eight bits which represents a character. Data transfer rates is the velocity at which data is transmitted from one device to another.

In IDE hard disk specifications, it is commonly seen that a data transfer rate is xx ms (microsecond). Essential, the lower the data transfer rate, the faster the hard disk can read and write on the media and retrieve data that is requested by the user or a software application. The data transfer rate allows for faster execution of tasks sent by the user to the computer system.

Hard Disk Role in Computer System

The hard disk possesses a major role in the various aspects relative to the operation of a computer system that includes:
� Performance � hard disk is important in determining overall computer system performance because the speed of boot up and loading of software applications are directly affected by the speed of the hard disk. It is equally vital during multi-tasking operations or processing large amounts of data;
� Storage Capacity � obviously, being the main storage device, a higher capacity allows for storage of more data and programs;
� Software Support � with inflated operating system files and software applications, the hard disk provides critical support to their stable performance;
� Reliability � good quality coupled with smart maintenance and back up will help protect your data.