Selection and use of mobile hard disk technique

Selection and use of mobile hard disk technique

Drive is exchanged between computers in the middle of a large-capacity data storage, usually in the choice of mobile hard disk, consideration is nothing more than the capacity, interface properties, size and additional features, of course, price. The following more specific about when selecting HDD considerations:

1. Capacity. On the market for mobile hard disk capacity is generally in the 40GB ~ ​​120GB range, from the use of nature to see, 40GB ~ ​​120GB is enough, because just as a transitional removable hard disk storage media, there is no need to use much capacity. However, due to hard drive capacity and the price is not proportional to the mass tend to have higher cost, but lower than the 40GB hard drive is already eliminated most of the products, it is recommended to buy a new mobile hard disk to select more than 40GB, but if the purchase of hard disk box back to its assembly it is another matter.

2. Size. Mobile hard disk drives and disk cartridge from the composition, which includes the interface and control circuit. There are usually two removable hard disk size: 2.5 inches and 3.5 inches, corresponding to notebook and desktop computer hard drive. 2.5-inch size and weight of smaller, more portable, but the price is more expensive than the 3.5-inch drives. Generally recommended to select 2.5-inch drive.

3. The interface. Mobile hard drives are generally used USB interface (IDE interface, and there have been earlier, but inconvenient to use, connection to open the case), but pay attention to the USB interface with USB1.1 and USB2.0 two specifications, which is faster than data transferthe former is several hundred times faster, and the computer's internal hard drive is basically the exchange of data at the same rate, but the price is slightly more expensive. Should be the preferred selection of mobile hard disk USB2.0 interface.

4. Purchase products or DIY. Mobile hard disk can be used directly to buy products, but can also be purchased in the computer market right HDD Enclosure (without hard drive which contains the appropriate USB driver circuit and interface circuit, USB adapter cable and external power supply), then with 2.5-inch notebook hard drive DIY their own after a USB hard drive. HDD Enclosure prices about 50 to 150 yuan, accompanied by the old laptop disassemble hard drive (1GB ~ 4GB prices in the 100 ~ 300 yuan) prices in the mobile hard disk 200 to 400 yuan on it.

The time of purchase to pay attention to the size of mobile hard disk box is also the difference between and interface specifications, refer to the instructions above. I own the mobile hard disk is to use a 2.5-inch USB2.0 HDD Enclosure plus a 40GB hard drive second-hand laptop DIY made, the total price but $ 600. Installation is very simple, just plug the interface and hard drive for good on it.

5. The attention of the use of mobile hard disk problems.

(1) mobile hard disk Connection: Mobile hard disk USB cable is the data transmission lines, power lines is hard work, the connection is too long will lead to increased resistance and data interference, the mobile hard disk does not work, so pay attention to : USB transfer cable as short as possible, in addition to the original configuration of the cable, the connection should not extend the line; the second is connected to the computer chassis behind should choose the USB interface (fixed directly on the motherboard interface), while the front of the chassis should not be used interface (which is connected to the motherboard through a wire the front panel).

(2) mobile hard drive external power supply: mobile hard disk drives and data interface work power supply is provided by the computer's USB port. However, using more than 10GB mobile hard disk, simply rely on the hard drive USB cable power supply may be insufficient due to a malfunction, this time we must use an external auxiliary power supply (DC power supply). But now on the market for mobile hard disk power consumption are relatively small, with a USB cable are dual-excuse-powered, so usually you can just plug the USB cable!

3) Although the use of mobile hard disk USB interface, support hot swap, but note that in the course (Windows Me/2000/XP system) must be sure to turn off the USB interface to unplug the USB connection (USB mouse to click the date next to the Interface flags, shut down the interface), or in a high-speed operation of a power outage may cause hard disk damage