Hard Disk

Introduction of Hard Disk

Today hard disk is most commonly used storage device in personal computers and
laptop computers. Mostly application program and operation systems
require hard disk for installation and operation. That is way it is very
important to verify When purchasing a hard disk drive, this hard disk
drive is suitable for your uses and has or does not have the options you
may or may not need.

Interface of the hard disk

There are many types (interface) of hard disks available in the market for
example IDE/ATA,SCSI,External hard drive. That is why first decide your
need is internal or external hard drives. When looking to purchase a
hard disk drive the first it is important consideration is the Interface
the hard disk drive uses to communicate with the computer .

IDE/ATA
 
This type of hard disk is used with IBM compatible computers, and
very easy to install in a computer. Each IBM computer has the
availability for a maximum of four IDE devices, for example IDE hard
disk , CD drive and DVD drive.

SCSI 

The SCSI interface is generally a better and  faster solution
when compared to IDE/ATA but this solution is not best for common
user only best for server level machine.  however in some cases
can be more difficult to install. To install a SCSI hard disk drive
you must have a SCSI card and an available connection on the SCSI
cable connecting to the SCSI card.

*.External Hard disk There are many solutions are also available; these include, USB Hard disk drive, Fire wire Hard disk drive and Parallel Hard disk drive. The main benefit with external hard disk, you can move it where you want very easily. Mostly external hard disk is usedfor data backup and change the physical location of data.

Other considerations

Here are some important considerations to look at when purchasing a computer new hard disk drive:

Speed

Hare disk speed is playing an important role when your consider a computer speed. The accessing speed of hard disk is also very high as compare to other storage devices. It is from 5 to 15 MBps. The platters of hard disk rotate from 3000 to 10,000 revolution per min.

Warranty

How long is the warranty and what does it cover.