コンピュータ・システムにおけるハードディスクの役割

December 25th, 2014

ハードディスクはコンピュータ・システムの動作において、以下のような様々な側面で主要な役割を担っています。

・パフォーマンス:ハードディスクはコンピュータ・システム全体のパフォーマンスを左右する重要なハードウェアです。システム起動やアプリケーション呼び出しの速度に、ハードディスクの速度が直接影響するからです。同様にマルチ・タスク動作や大量のデータ処理においても重要となります。

・記憶容量:主要記憶デバイスであるハードディスクの容量が大きいほどより多くのデータやプログラムを格納できるのは当然です。

・ソフトウェア・サポート:膨大なOSファイルやアプリケーションを安定して動作させるためにハードディスクが重要なサポートを提供します。

・信頼性:高品質なメンテナンスとバック・アップ機能の組み合わせによりユーザのデータ保護を手助けします。

New Hard Disk Drives

December 18th, 2014

 

I’m no longer surprised whenever something so advanced and high tech comes up. I’m always impressed but no longer surprised. Just this month in Singapore, researchers have developed one of the world’s thinnest hybrid hard disk drives with storage capacity of over 1 terabyte. Woah, right? A typical hard drive is 7mm thick but this one is only 5mm thick. It has bigger capacity too since the typical ones can only store 500 gigabytes. Its perfect for tablets and ultrabooks.

It is called “A-Drive” is a hybrid hard disk drive. It costs less and provides more storage space. How much more? Well it can easily store 250,000 songs!  It is expected to cost around $60 when it comes out soon. There are no exact dates when this product will be available in the market.been developed by a team of researchers from the Data Storage Institute (DSI) of the Agency for Science, Technology and Research.

JTS Corporation

December 11th, 2014

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

December 4th, 2014

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.

A hard drive and media player in one?

November 27th, 2014

17.jpg

Have you ever thought of bringing a portable video player on the road? Of course, you may think I might be talking about portable DVDs, but no. If you have a wide collection of movies at home, will you bring your CDs with you to your destination? Of course not! That would be too much of a hassle.

To the movie buffs, here’s a treat for you. Chinavasion is again trying to catch up with the big names in the hard drive industry as they have come up with a portable external hard drive that can be used a media player. The player has a 120GB capacity and a 2.5 inches wide screen for viewing. It also has an earphone jack, so you can basically bring it everywhere you go—even in places that value silence.

Photo taken from http://chinavasion.manufacturer.globalsources.com

Deframenting Hard Drive Myths part 1

November 20th, 2014

Stressing the needle because of defragmenting has some truth in it, though gone astray. Defragmenting the hard disk might require a lot of searching and looking as the hard drive reorganizes its data in a contiguous style. Defragmenting lets the read-and-write heads to scan huge amounts of data without searching over the platters.

On the other hand, right after defragmentation, the hard disk is no longer required to search for all the platters for your data. In this way it lowers the amount of head actuator actions as well as intensely increases the performance of the hard drive. For that reason and technically, defragmenting the hard drive will reduce the workload of the head actuator.

Secure Erase Program

November 12th, 2014

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.

Hard Drive – Size does matter

November 5th, 2014

idedriveHard drives come in many forms and shapes, the most common are the 5 1/4″ and the 2 1/2″ the first appearing on desktops and the later on laptops. As of this year, the highest capacity hard drive has topped the 2TB capacity and is set to improve further as data storage technologies improve. The smallest hard drive ever made was a 0.85″ hard drive developed by Toshiba for use as if it were an SD/MMC card for data storage on a computer or mobile devices. The two forms of hard drives have stood the test of time due to the fact that flash memory has experienced such a boom prices have fallen making them a more viable storage solution for smaller needs. The speed at which these drives spin can range from 5,400 to 7,200 rpm the later of which was the long standing standard for server-type SCSI hard drives that were very expensive. Most mobile computers (laptops) come with a 5,400 rpm drive due to the sound considerations when using the device, the faster the device the louder the sound (the spinning sound or hum you hear). You can in theory use faster hard drives on mobile computers but they would reduce battery life and make it noisier defeating the overall design of the laptop. Continue reading »

SyQuest Technology, Inc.

October 29th, 2014

med_ap104s3062.jpgSyQuest Technology, Inc. abbreviated as SYQT Inc was known in making removable hard disk for personal computers. Syed Iftikar started the company back in 1982. It was name in some extent to him, short for Sy’s Quest. SYQT first product were 3.9” detachable hard disk. SyQuest products aim to give personal computer users non-stop storage for data-driven applications like desktop publishing, Internet information management, multimedia, audio, video, digital photography, fast backup, data exchange, and archiving. Nonetheless, they can not capture their target market

Between 1995 and 1997 their sales have been dropping down. It was for the reason that their products have quality issue. Later in 1998 the company filed for bankruptcy.

Quantum

October 22nd, 2014

med_ap104s3060.jpgQuantum was founded from designers and executives Shugart Associates, IBM and Memorex. They came up with the eight inch drive. The idea of the product was to achieve very good performance without costing much on full closed servo system.

The Q500 series was the most popular of Quantum. In 1982 it had a market share of 25%. Later on Quantum was also started to develop SCSI hard drive. The product was released in 1986, it was the Q280 drive. Further developing resulted to ProDrive. A combination of Q500 series and Q280 series technology were used in prototyping it. ProDrive supports the ATA interface.