I decide my hard drive assembly ---- Hard Drive Buying Guide

I decide my hard drive assembly ---- Hard Drive Buying Guide

As a high-capacity mobile hard disk data storage exchange tools, more and more attention by the market, and with the hard drive prices way down, move the hard drive began as the old Former Yan Wang Xietang, flying into the homes of ordinary people.

Now available in the market for mobile hard disk is divided into two categories: original mobile hard disk and removable hard disk assembly. Original mobile hard disk brands are Lvzhi Xing, Buslink, Samsung, BenQ, Seagate, Newman, Patriot, etc., they have focused on the function and appearance, consumers can choose their own preferences. Assembly of mobile hard disk market is relatively confusion, good and bad. In fact, the composition of mobile hard disk assembly is not complicated, mainly by the removable disk cartridge and built-in hard drive form. Professional eye for a ride, pros and cons of established contractors, but the average consumer can only judge based on their subjective, inevitably the natural discrepancies., The following is me as "come" to the consumer to buy some suggestions for reference only:

1 "heart" of the choice

According to the price structure of mobile hard disk, the most important parts of hard disk or hard disk box, hard fundamentally determines the quality of mobile hard disk. But as consumers, it is difficult to accurately measure the level of a hard disk. To the mainstream 2.5-inch notebook hard drive, for example, there are now brand Hitachi, Samsung, Seagate, Western Digital, Fujitsu and so on. Basic parameters of Youyi 5400 8M or 2M majority, and probably almost the same quality of these brands, consumers and more from a professional web site, forum, more understanding. But nowadays the mainstream brands of mobile hard drives, Hitachi and Samsung notebook hard drive seems to be more, mainly because of its superior stability relative to other brands.

Because of its lucrative notebook hard drive, so production, marketing companies and even the public, inevitably mixed. Parallel, disassemble goods in the market are not uncommon, and as manufacturers of the genuine method of identification without much publicity, consumers purchased process is very easily deceived.

2 Interface

HDD Enclosure External interface methods are mainly parallel interface, IEEE1394, USB three.

Parallel Interface HDD Enclosure appeared earlier, due to its low data rate and does not support Plug and Play has been eliminated.

IEEE1394, also known as FireWire, is the Apple standard interface. The theoretical data transfer speeds up to 400Mbps, and supports hot-swapping. However, only some high-end PC motherboard was equipped with an IEEE1394 interface, so the popularity of the poor.Recommended to use with special needs friends.

USB interface HDD Enclosure is the mainstream interface, support hot swap. There are two standard USB, USB1.0. And USB2.0. USB2.0 transfer rate up to 480Mbps, 40 times the interface is USB1.1, USB2.0 needs motherboard support, backwards compatible with 1.1.However, because some time ago many businesses in the high speed 2.0 on playing with words, when consumers choose to pay attention to the standard 2.0 interface should be full speed USB2.0. Now appearing on the market a lot of USB2.0 + IEEE1394 dual interface mobile hard disk box, the configuration is more flexible, but the price is relatively high.

3 Power

2.5 inch USB HDD work, hard drives and data interface from the computer USB interface. USB interface provides 0.5A current, while notebook computer hard drives and operating current of 0.7 ~ 1A, normal copy of the data no problem. However, if larger capacity hard drive or move large files are prone to insufficient power supply, and if the USB interface to multiple USB devices at the same time also prone to power supply shortage, resulting in data loss or hard drive damage. Now most of the market to adopt the USB Y-cable line, one more for the auxiliary power supply. Can solve the problem of insufficient power supply.

3 shell material

Mobile hard disk box material is often overlooked when people are buying the place. Current speed and previously hard to improve, but also brought the heat issue, if you choose poorly, then the hard disk box cooling, the stable operation of the hard disk will have a big impact. The current market price is generally low mobile hard disk box is a plastic material, less heat dissipation, in a short time may be no problem, if for a long time data exchange, then the machine can appear stagnant, data corruption, crashes and other issues . At present, informal vendors actually use the mobile hard disk box and some aluminum-magnesium alloy as the material is even, although this part of the price higher, but a good cooling measures, will allow you to work hard is more stable.

4 speed transmission

Usually 2.5 inches brand mobile hard disk read and write speed from the hard drive, read and write control chip, USB ports, type the three key factors. Current mainstream 2.5 inches brand mobile hard disk read speed of about 15-25MB / s, write speed is about 8-15MB / s. If we are to 10MB / s write speed of copying a 4GB DVD movies to mobile hard disk, to be time-consuming about 6 minutes and 40 seconds; if 20MB / s read speed from a 4GB removable hard disk copy of DVD movie to hard disk, then the host computer, it takes time about 3 minutes and 20 seconds. Note that when consumers can purchase a file transfer site requires businesses to test, or have a special, such as HDTach, HDTune test software on the mobile hard drive for professional testing.