Five key points to keep in mind to buy the mobile hard disk Raiders

Five key points to keep in mind to buy the mobile hard disk Raiders

1, the mobile hard drive enclosure:

HDD enclosure material is generally divided into two kinds of metal and plastic. In general, the metal shell of the compressive strength and thermal performance would be better, and the plastic housing in the earthquake and the relative weight of some better.

2, PCB circuit board control chip:

HDD PCB above the control chip is directly related to the product of reading and writing performance and stability. Current control chip is divided into high and low grades.

High-end controller chip is represented by the United States Cypress Cypress ISD300A1/CY7C68300B/CY7C68300C, Japan NEC μPD720133, Wang Jiu PL-3507. The chip features are: expensive, reliability and compatibility are very good, high-end users the choice.

Low-end control chip is represented by the Yasukuni AU6390, ALi ALi M5642, Genesys Logic GL811 series. The chip features are: the relative stability and data transfer performance to be worse, but enough to cope with the daily demands of work, because of its low cost, multi-application in the low-end hard disk box.

3, HDD external interface:

The current mainstream mobile hard drive interface is the high-speed USB2.0, its transfer rate can reach 480Mbps (60MB / s). To see the IEEE1394 high-end products, or eSATA interface, 1394 interface is divided 1394a and 1394b two. 1394a interface data transfer rate theoretically can reach 400Mbps (50MB / s); 1394b interface, is able to reach 800Mbps (100MB / s). In theory can reach eSATA 3Gb / s, the future development direction of mobile hard disk interface.

4, the HDD power supply:

Mobile hard disk if insufficient power supply, will lead to less hard to find, data transmission errors, or even the internal hard disk is damaged. Mainly caused by insufficient power supply motherboard USB port power supply does not meet the standard value, or using a high-energy control chip. In view of this situation, many HDD manufacturers to design a "two-headed USB-powered" data line, use two USB ports on the mobile hard drive power supply.

5, notebook hard drive:

Mobile hard disk notebook hard drive is the most important part of the mainstream specification for the 2.5-inch, 3.5-inch desktop hard earlier due to size restrictions have been out of the mainstream ranks. Currently, Seagate, Western Digital, Hitachi, Samsung, Fujitsu hard drive manufacturers have produced the appropriate product choice for users. The main technical parameters of notebook hard drives are speed, cache size and product volume. I suggest that in general the user to select 5,400 rpm, 8MB cache hard drive, brand and capacity according to their needs.

Edit Summary:

After more than five key points in understanding, I believe many of my friends have had a mobile hard drive about understanding. Currently on the market for mobile hard disk box brands many types, the quality varies greatly, consumers, do not only attach importance to appearance and price, more details from the product quality and to start at the same time not to be "biting off more than big" purchase psychology, good enough. Finally, I wish you can buy a pre-holiday for their own mobile hard drive, power their e-era life.