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External Hard drive vs Portable hard drive

Discussion in 'Hardware' started by THETHYLAND, Dec 7, 2014.

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External HDD vs Portable HDD

  1. External HDD

    1 vote(s)
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  2. Portable HDD

    0 vote(s)
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  1. THETHYLAND

    THETHYLAND Thread Starter

    Joined:
    Dec 7, 2014
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    I am looking to buy a new hard drive to store data (mostly games and pictures). But I'm not sure which type of hard drive to buy. Could you please help :) I want to be able to transfer the data to my laptop also.
     
  2. saikee

    saikee

    Joined:
    Jun 11, 2004
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    You are comparing an apple with an orange here.

    An external hard drive by definition is permanently attached to a pc and will spin as long as the PC is switched on. The common interface is by eSata or network attached via network cable to a router. This usually give you the maximum speed next to an internal connection. If you really want the best speed just run the Sata signal and power cable outside to connect the hard disk or use a mobile rack (hard disk in a removable drawer on the front face of the PC but internally wired).

    A portable hard drive is one you can connect to it only when you need accessing its data. Most commonly used interface would be USB2, USB3, Firewire and eSata with hot swap.

    Then you have 2.5" portable hatd disk (latop size) that can be powered by USB2/3 whereas a 3.5" portable hard disk (desktop size) requires an external power supply. The 2.5" comes in its own if you use a SSD (mostly available in 2.5" form factor) and an eSata connection to give performance close to the external hard disk.

    So it all depends on

    (1) Connection interface available. No much point of looking at performance if you only has USB2.
    (2) Amount of data needed to access, Will 256GB do or a 4TB hard disk is perfect.
    (3) How often you want to access it? If you need it all the time using a portable is a waste of time.
    (4) Convenience. Something like an Network attached hard disk allows you to use it anywhere in the house via Wifi but at a lower speed.
     
  3. THETHYLAND

    THETHYLAND Thread Starter

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  4. saikee

    saikee

    Joined:
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    At the time when the 6TB hard disks are commercially avaliable my recommendation is to get at least a 3TB because the price difference is small. However your 2TB portable hard disk has 5400rpm speed so it would not be as fast as a 7200rpm model. Its overall width is 12.6cm which is 4.96" so it should have a 3.5" hard disk normally used in a desktop PC.

    USB3 can run at least twice as fast as a USB2. If you haven't got USB3 in your PC you can buy a USB3 add-in card to plug in an internal slot.

    To copy files to a hard disk via USB2 you can get only about 30MB/s speed on average. On a USB3 you may reach 100MB/s at which speed a 2TB hard disk would still take 5.5 hours to fill up.
     
  5. THETHYLAND

    THETHYLAND Thread Starter

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    Thanks for your help :)
     
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