Formatting Hard Drive Myths part 4

May 22nd, 2015

There is a myth that bad sectors can be repaired once it was reformatted. A bad sector is an area where the hard disk cannot be written nor read properly. It may due to program-related problems that result in a logical bad sector. Bad sectors that are software related can be restores by formatting using any logical repair utility.

But in case the problem is due to eroded media or the hardware is directly damaged. Such physical bad sectors can no longer be repaired using any logical repair utility and formatting it will not restore them. Formatting them, however, can replace those bad sectors with spare sectors.

テープドライブに対するハードドライブ

May 15th, 2015

ハード・ディスク・ドライブの登場以前には、主にメインフレーム・コンピュータ用の主要記憶メディアとして「テープ・ドライブ」が使用されていました。2つの記憶メディアには以下のような特筆すべき違いがあります。

・テープ・ドライブでは、薄いプラティック製テープの表面に磁気記録材料がコーティングされているが、ハード・ディスク・ドライブでは層状に重ねられた高精度ステンレスや高精度ガラスを利用している。

・ハード・ディスク・ドライブ上では、テープドライブと比較して、より高速でのシーク動作が可能となった。

・テープ・ドライブのヘッドはメディアに物理的に接触するが、ハード・ディスク・ドライブでは物理的な接触はせずにファイルを読み取る。

・ハード・ディスク・ドライブではテープドライブよりも比較的小さいスペースに膨大なデータを格納できます。

4TB Hard Disk Drive

May 8th, 2015

This year has been the unveiling of 4TB hard disk drives. Companies have been pushing for better and bigger storage and better performance. Both Toshiba and Western Digital has released their new products towards the end of the year.

Toshiba said “The range has been developed with the storage challenges presented by big data and cloud services in mind,” It is 50% increase in storage capacity than the last ones they have produced and 18% faster too!  The sample shipments will be available beginning this month and a bulk produce by the New Year.

Western Digital 4TB WD Black drives have maximum capacity, says Matt Rutledge, VP of Western Digital’s client storage group. He continued on “Maximizing the features and functionality of power computing applications such as gaming, multimedia and video editing, the new WD Black 4 TB hard drives offer capacity and performance – without compromise.”

Both of these products are expected to drive sales by next year, making the future of hard drives more impressive.

データ転送速度

May 1st, 2015

ハードディスクドライブに書き込まれたデータは、人間が読める言語ではなく、2進数を表す「1」と「0」の連続による数列です。これはコンピュータの理解できる唯一の言語であるため一般的にはマシン語と呼ばれます。ファイルには xx KB(キロバイト)xx バイトというようにそれぞれサイズがあります。1バイトは8ビットで構成されており、1つの文字を表現できます。データ転送速度とはあるデバイスから別のデバイスへとデータが転送される速度です。

IDEハードディスクの仕様書では「転送速度は xx ms(マイクロセカンド)」というような記述を目にすると思います。重要なのはデータ転送速度の値が小さいほど、ユーザやアプリケーションが要求したデータを、ハードディスクがより速く読み、メディアへ書き込んで読み出せることです。データ転送速度により、コンピュータ・システムのユーザはより速くタスクを実行できます。

Understanding IDE Hard Disks

April 24th, 2015

1.jpgHard disks or sometimes called hard drives allow the storage of huge amounts of data on an electromagnetically charged surface or set of surfaces. A hard disk is actually composed of a stack of disks similar to old phonograph records where data is recorded in concentric circles known as tracks. The disk drive head records and reads information stored on the tracks. There are two heads located on both sides of a disk that either reads or writes data as the disk is spinning. Every read or write event needs for the data to be located which is known as seek operation. Hard disks come with varying speed and mapped to logical block address (LBA) which is commonly found in larger hard drives.

Compact Flash Adapter

April 17th, 2015

3.jpgWith the introduction of the Compact Flash Adapter, anyone can now make use of a CompactFlash memory as a primary hard drive function for a computer system. As opposed to the traditional hard drive, this has no moving parts like spinning disks or wobbling bearings. This gadget provides the functionality of replacing traditional hard drives with economical and rugged CompactFlash cards that uses the same IDE motherboard interface like regular hard drives. Any system equipped with a standard 40-pin IDE connector can use this technology. This solution does not require the installation of additional hardware drivers and can be used as a primary boot device that contains the computer’s operating system.

Upgrading the Capacity (Part I)

April 10th, 2015

Of course, everybody wants more capacity. If you have the money to spend, why not indulge into it? Just a little upgrade will be nice. You will find no difficulty upgrading your IDE hard disks, either by replacing the old one or adding another one to add more space.

Upgrading the Capacity (Part I)All IDE hard disks have the same standard pins and socket type. So if you are just replacing a hard drive, the steps can be very easy. Just plug out the IDE and power cables from the disk, remove the screws holding the drive into the case and plug in the new one.

Deframenting Hard Drive Myths part 1

April 3rd, 2015

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.

Deleting in Hard Disk

March 26th, 2015

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.

Hard Disk Error – Hard Disk Not Found

March 19th, 2015

Not FoundThis is an error message we all hate we’d never see but these small yet terrible precision storage devices are electro-mechanical and they will eventually wear out. Before you consider burying the darned thing, try getting hold of a new IDE cable and replacing that. The cable is made up of several dozen wires that tends to cook up in the PC’s case especially if you don’t have ample cooling and you love to over-clock the system that makes it hot enough to cook and egg on.
Another thing you might want to try is to unplug the IDE cable at both ends and try re-seating them. The heat within your PC causes thermal expansion which can loosen cables(though very rare), but they can happen. check the power connector and switch with another one or a free one you may have. Of course you’re doing this all after you’ve shut it down and pulled out the plug from the wall socket, waiting a few minutes for the residual charge in the power supply to dissipate. you should also touch the power supply to get rid of the very nasty static charge you maight have picked up walking on your carpeted floors.