Old notebook hard drive to receive mobile hard disk box should pay attention to what?

Xiaobian interacted with a small partner yesterday, mainly talking about upgrading laptops. Later mentioned the replacement of the hard disk after the old hard disk processing matters, Xiao Bian proposed to either sell second-hand or use it as a mobile hard disk. Today, Xiao Bian mainly talked about the old laptop hard disk turned into a mobile hard disk.

Thickness problem

The common specifications of notebook hard drives are 2.5 inches (1.8 inches are almost eliminated), but they are all 2.5 inches. Because of the different thicknesses, there are some differences in specifications. At present, the main thickness of the notebook hard drive is 7mm, 9.5mm, there are more special 12.5mm, 15mm. Why is there so much difference in specifications?

The reason why the thickness of notebook hard disk is different, mainly because of the problem of the disk. The number of general disks with high rotational speed cannot be large, so the capacity is low, but the volume thickness can also be effectively controlled. At the same speed, the larger the single-disc capacity, the faster the general access speed. Thin description of the disc is small, if at the same time with high speed, large capacity characteristics, the performance is undoubtedly improved.

Earlier in order to achieve large capacity, you would have to put more platters, but the platters themselves need to dissipate heat and place the heads, which will inevitably increase in thickness, such as the 9.5mm and 12.5mm notebook hard drives. Of course, the more extreme is the 15mm hard disk, usually this hard disk will have 3 ~ 4 discs, the speed can only be 5400rpm, of course, this is very rare.

The vast majority of hard drives used in notebooks are now available in sizes of 9.5mm and 7mm. Most of the available hard disk drives on the market are also compatible with these two hard drives. For example, some HDD boxes will also be given a pad frame to fill in the gap between the 7mm HDD and HDD box. As for the 12.5mm notebook hard drive, search only for this height of the hard drive box (can be backward compatible with 7mm, 9.5mm).

Format problem

Regarding the issue of format, many people said that they could use BTFS or exFAT format. Xiaobian did not think so. Xiao Bian thinks that the best choice for mobile hard disk format is still NTFS. The first is because of its versatility, which can be used from WinXP to Win10 (except for Linux and Mac). Second, the performance gap can be ignored. There is always a saying that the exFAT format is more efficient than NTFS, but it is used by Xiao Bian. In fact, the percentage of the final percentage of test data is really not worth writing a book.

USB 3.0 or USB 3.1 hard disk box?

Today's HDD boxes are mainly based on USB 3.0, and some of them are based on the USB 3.1 interface. Many say that it must buy faster USB 3.1 interface hard disk box it? This is not the case. According to Xiao Bian's knowledge, at present, there is no ordinary mechanical notebook hard disk speed that can exceed the speed of SATA 3.0 (6Gbps), and it can not reach half the speed of this interface, so even if using USB 3.0 interface (5Gbps) Hard disk box is no problem. It can even be said that the vast majority of SATA 3.0 interface SSDs have no problem using USB 3.0 HDD enclosures! In addition, many people will misunderstand the USB Type-C=USB 3.1 problem. In fact, this is not absolutely related to what version of the USB, Type-C is just a form, both sides of positive and negative can only plug, not to say that the speed specifications, we pay attention to this point on the line.

Mobile hard disk should pay attention to?

Hard disk afraid of what? In fact, mechanical hard drives are afraid of two things. One is overheating and the other is collision. For fear of collision problems, pay attention to the space of the hard disk box on the line. Most of the low-cost HDD boxes are ultra-thin, which means that apart from being tightly attached to the hard disk itself, there are no other protection measures. The price is of course very cheap, and the regular brand products are also not worth 30 yuan. If you want to choose cheap hard disk box products, it is advisable to buy at least a metal shell hard disk box is appropriate; but if it is to provide seismic design notebook hard disk box, on the one hand will be slightly thicker, the other is the price, about all More than 50 yuan.

In view of the crux of overheating, Xiao Bian believes that regardless of the price of the hard disk box to buy, the most important thing is to refuse long continuous reading and writing, especially when there are too many broken files (small files). When using a mobile hard disk, if you encounter too many files and the file capacity is too large, you can divide it into several copies. The interval is a few minutes, which can effectively ease the work of the hard disk and extend the service life of the hard disk. Xiao Bian's mobile hard disk has been working 24x7 for more than 1 year. It has been used for mobile hard disk in the last six months.