Magnetic Disk And Hard Disk

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Magnetic Disk And Hard Disk

Postby Alisa » Fri Aug 31, 2012 4:36 am UTC

Hello Friends,

Magnetic disk and Hard Disk, these two devices are used to store the data in Computer System..

Can anyone tell me about these devices....
What is the difference between Magnetic Disk And Hard Disk
And Which Device is better for storing the data ???????
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Re: Magnetic Disk And Hard Disk

Postby nickelpro » Fri Aug 31, 2012 1:11 pm UTC

An HDD is a magnetic disk.

To be more precise, and HDD is made up of one or more rigid magnetic disks called platters, plus a read/write head and of course the mechanical bits that make it all work. Perhaps you meant to ask about magnetic tape? Or some other form of media such as CDs and DVDs?
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Re: Magnetic Disk And Hard Disk

Postby ElWanderer » Fri Aug 31, 2012 1:16 pm UTC

Alisa wrote:Magnetic disk and Hard Disk, these two devices are used to store the data in Computer System.

A hard disk drive contains one or more magnetic disks - they're not two separate types of device (though there are other things that contain a magnetic disk e.g. a floppy disk). What is it that you actually want to compare?

Alisa wrote:Which Device is better...

The answer to this kind of question will almost always depend on what you want to do, how much you're prepared to spend etc.
Now I am become Geoff, the destroyer of worlds
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Re: Magnetic Disk And Hard Disk

Postby wumpus » Fri Aug 31, 2012 4:02 pm UTC

If this is a homework question, just drop the class.

Note that nearly all magnetic disks in use are hard disks. There are also floppy disks, but they are painfully obsolete and the data is rotting on the ancient hoards. Floppy disks are also magnetic, but use a cheaper material to put the magnetic material on and presumably had less issues with the head touching the disk. Note 3.5" floppy is stuck inside a hard plastic case, but the material the data is stored on is still floppy.

Hard disks are so called because the are *not* floppy. SSDs (solid state drives) might be called "hard disks/drives" but they are not disks (they are rectangular, and making them anything else would be painfully expensive). Optical discs are also hard (and obviously disks) but are rarely confused with "hard drives/disks".

[tl:dr] they are the same. No difference.
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Re: Magnetic Disk And Hard Disk

Postby GeorgeH » Sun Sep 02, 2012 6:52 pm UTC

"Magnetic disk" could also mean tape drive. I'm guessing that English isn't the OP's first language, though, and people using the words magnetic and hard interchangeably is causing confusion.
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