Difference between an external expension and portable hard drive?

Just Me

I need a 1TB external hard drive but I keep seeing expansion and portable external hard drives. What's the difference? Or are they the same thing. I just need it for my music. Would this be good for what I need? http://www.newegg.com/Product/Product.aspx?Item=N82E16822178245

Answer
I think two Solid State hard drives that are 512gb each, that would give you pretty much what you are looking for, they aren't cheap though, in Canada that would run about $450.00 each, you can get a 1T solid state drive for about $900.00, which to me is quite prohibitive, and you need a Thunderbolt port for that one.. I would think you will pay much less for a 1T hard drive disc, it certainly wont cost even close to what solid state are, if you don't need a really fast speed you can get a range of normal plug in hard drives for not too much money...You didn't say if you had a desktop or laptop...
Glen.....

What is the difference between external and portable hard drives?

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Beyond the fact that if you external hard drive was the size of a house it wouldn't be portable? Are there any other differences? Also after I back up my data can I just leave them unplugged and powered down? Or is there some reason they would constantly need power?

Answer
They do the same thing, essentially. Most "portable" hard drives use a 2.5" hard drive, the same sized drive that comes in a laptop for example. External hard drives usually use 3.5" drives, hence the difference in size.

You can also build your own external drive by purchasing a drive and then a cage for the drive. If you were to do this eSATA is your best bet, provided your computer has an eSATA port of course.

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Title Post: Difference between an external expension and portable hard drive?
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