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What is the function of the hard disk?
The task of a hard disk storage is doing. Everything you store on your computer is on a hard disk. Not just documents, pictures, music, and video. Your program, your preferences, even your operating system-everything is stored in the hard disk of your computer.
If your hard disk is damaged, you can lose everything. It's a very sad thing. And that's the reason most people have a backup system. They have another hard disk and copy all their important files to the hard disk.
How big is the hard disk that you need?
Everything that can be stored on the hard disk is measured by its size and for the text size is very small in a worksheet like the word office, while the size of an image will be larger, and for music even larger size of its storage, and video the greatest of all ,
Hard disk is like a scale. Not knowing the difference between objects in it only measure what they know. But besides pound, hard disk measuring objects based megabytes (MB), gigabyte (GB) and terabytes (TB.)
calculations, 1 megabyte equals 1 million bytes, one gigabyte equals one billion bytes, and one terabyte equals one trillion bytes.
So, what does this mean for you?
If you need to transfer files between computers or hard disks just to back up multiple files, you can deal with hard disk capacity is smaller (like Hard Disk Expansion 500 GB).
If you want to back up the entire contents of your computer, or even multiple computers, or if you store a lot of video or audio files, you may want a hard disk with a larger capacity (such as Backup Plus Desktop Hard Drive 1 TB or larger).
Is your hard disk will work with PC or Mac?
Hard disk with any brand will be able to work with a PC or Mac. Some hard disk has been formatted to work with a hard disk or another hard disk. But any hard disk can be reformatted to work with all types of computers.
IMPORTANT : If you reformat a hard disk, each file on the hard disk will be lost. So make sure you have copied all your files in a safe place before you reformat a hard disk.
Using the same hard disk on a PC and Mac is a difference of difficulty?
The short answer is PC and Mac are not compatible. because in some cases, you can only do certain things. You can read about it here.
Any type of connection a different hard drive?
There are four basic ways to connect your hard drive to your computer:
USB
USB is the most common type of connection. You do not need to prepare anything. Quite in plug on your computer and your computer will immediately recognize the hard disk, and you can read and save files almost instantly.
FireWire
Plug and play like USB, FireWire 800 is much faster, so this way is so popular for transferring video files.
SATA
This is a standard SATA connection to the internal hard disk. SATA is presenting the highest speed file transfer of any format.
eSATA
The connections are somewhat less common but has a high performance and most commonly found on PCs. ESATA connection is performing at nearly the same speed to the internal hard disk.
How important is the speed of a hard disk?
When you start to turn on your computer, and after that you will open the file, listening to music, or do other things, you have to use your hard disk.
Disk is in the hard disk will be spinning. The faster the disk is spinning, eating will sooner your computer can find the file you are looking for.
So the hard disk with 7200 RPM speed will be faster than the hard disk that has a speed of 5400 RPM.
And that means you use from day to day will always be different. With an external hard disk, you will barely notice the difference. With the internal hard disk, the difference is only slightly with files and applications are smaller, and will be apparent once the file and a larger application.
The sections on the hard drive:
1. Spindle
Drive consists of a spindle which became the center of rotation of the pieces of magnetic discs for data storage. Spindle is rotating rapidly, therefore, should use high quality bearings.
Previously hard drive using ball bearing but now the hard drive is using a fluid bearing. With the fluid bearing friction and noise level can be minimized. Spindle is a decisive round of the hard drive. The faster the rotation rpm hard drive it will be faster to transfer a data or files.
2. Disc Magnetic (Magnetic Disk)
In this magnetic disk storing the data on the hard drive. Magnetic disc-shaped thin plate with a form such as a CD-R. In the disk there are several magnetic discs.
Hard drive is first created, consisting of 50 magnetic disk disc with a size of 0.6 meters and rotates at a speed of 1,200 rpm. Currently the disk rotation speed has reached 10.000rpm to achieve 3.0 Gbps data transfer.
3. Read-write head
Read-write head is the maker of data from the magnetic disc. This head floated to the distance the light with magnetic discs. Formerly head in direct contact with the magnetic disc, resulting in wear and tear on the surface due to friction. Now, between the head and the magnetic discs already are spaced so that the life of the hard drive longer.
Read-write head is made of materials that had been developed, ranging from Ferrite head, MIG (Metal-In-Gap) head, TF (Thin Film) Head, (Anisotropic) Magnetoresistive (MR / AMR) Heads, GMR (Giant Magnetoresistive) Heads and now used is CMR (Colossal Magnetoresistive) Heads.
4. Enclosure
Enclosure is the outer layer of wrapper harddisk. Enclosure serve to protect all the parts in the hard disk from being exposed to dust, moisture and other things that can cause data loss.
In the enclosure there is breath filter which makes hard drives are not airtight, it aims to remove the heat that is on your hard drive for the spindle rotation and readings Read-write head.
5. Interfacing Module
Disk ATA / EIDE
Hard disk with type EIDE (Enhanced Integrated Drive Electronics) or type ATA (Advanced Technology Attachment) is a standard latest version of an interface disc suitable for connection to the bus, Many manufacturers disk has a span disk with interface EIDE / ATA disk such can be connected directly to the PCI bus, which is used in many PC (personal computer). Advantages drive EIDE / ATA significant is the price is quite cheap, because of its use in the PC market. One main drawback is required separate controller for each drive if the two drives are used together to improve performance. One of the famous chip manufacturers already include a controller that allows disk EIDE / ATA is connected directly to the motherboard.
Disk SCSI,
many disk has a user interface that is designed for connection to a standard SCSI bus. The disks tend to be more expensive, but has better performance, made possible due to excess SCSI bus rather than the PCI bus. Simultaneous access can be made to multiple disk drives because the interface drive is actively connected to the SCSI bus only when the drive is ready for data transfer. This is especially useful in applications where there are a large number of requests for small files, which often occurs in the computer that is used as a file server.
Disk RAID,
Promising exceptional performance and provides a large and reliable storage. Disk is used both in high-performance computer or in systems that require reliability dramatically higher than normal levels. However, by the decline in prices to a level that is more affordable, the disc becomes more interesting even to a computer system with size - average.
Disk SATA,
Hard disk with the type of SATA (Serial Advanced Technology Attachment), which interfaces disk ATA (Advanced Technology Attachment) with a version of the series using a thin cable that has a total small cable about two-thirds of the total hard drive cable with the type of EIDE or ATA disks that are 39 pins and SATA has a very high data transmission speeds and reducing the latency. So that the serial bus is capable of exceeding the speed parallel bus.
SATA,
In transferring data sequentially or via serial cable and also developing their own techniques SATA disk connected to the motherboard without the system master or slave, so that the SATA cables can only be used on a single hard disk. The type of hard disk which has been discussed this, all included in the category of internal hard disk, that is installed in the CPU. In addition there is also the internal hard disk external hard drive (hard disk which are outside the CPU), so it could be moved - to move. External hard disk has a rotational speed of 7200 rpm, very easy installation, no need to disassemble the PC and only by connecting the USB port to a PC, and can transfer data at 480 Mbps.
So can i samaikan, hard drive if you want to also learn how to position the hard drive Jumper master.Slave please click the link "HDD Master / Slave". Thank you a chance to read.
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