The advancement of NAND flash technology, on the one hand, the price of the storage product is lowered, and the performance has also been made up of the progress, especially the NVME SSD's heavier protrusion, even the U disk has also achieved good performance and capacity. However, even if so, I want to pick a high-performance U disk of Quality and Mide, the commercially available products are also a phoenix corner, plus the U disk market black film is flooded, and the performance capacity is short, which is daunting.
The author urgently requires a large-capacity mobile storage device, and the USB 3.0 mobile hard disk used for a long time is overwhelmed. It has been cut with two mobile hard drives before, so it is no longer considered using a mechanical hard disk as a mobile hard disk. Store the body, then aimed at the high-performance U disk storage market. Although there are many large-capacity high-performance products, it is either price, or the product is flooded by the black film, and I don't want to be ignorant, so I want to assemble myself. A mobile SSD product.
High performance mobile storage solution requirements analysis
The initial solution is to retain the original mobile hard disk box, purchase a large capacity SSD, after all, SSD performance is enough for USB 3.0, so there is no need to consider MLC products, after all, the writing requirements are not high, and the other has experienced a few more Year shuffle, current SSD storage products are relatively regular, large-scale SSD particles are generally guaranteed. So started to pick a 1TB SATA SSD product, but the price is basically about 1500, you must know that my original mobile hard disk price is only 300, not only high, the price is low, so I will choose 512GB. SSD, suddenly found in the process of looking for products, the price of a lot of M.2 interface is basically quite equivalent to the SATA version price, why not come to a M.2 mobile SSD?
The M.2 specifications are 2240, 2260 and 2280, although 2240 is very small, the 2240 dimension 512GB capacity SSD is basically no, so the regular 2280 version is selected. At present, there are many NVME-based M.2 SSDs, but this type of SSD has a common problem, that is, the main control is very large. If you use it in a closed system, high loads will have superheated protection, resulting in Rapid speed, of course, this is not the root cause of the NVME version, the most direct reason is that there is no NVME-based USB chip program on the market, which can only be done to choose SATA products. I hope that the manufacturer has launched NVME to USB.
After the final plan is determined, it is now the product model. It is also a circle in Jingdong. The cheapest 512GB is also 1200, so I will go to Taobao to find OEM version (hard disk manufacturers provide for notebooks and industry customers), these products are usually more Retail products should be a lot cheaper, but the disadvantage is that the product has no warranty, which can only store warranties, so that these SSDs have a small chance. So I set a product of MZNLN512HCJH-00000, belonging to Samsung PM871 Series (equivalent to consumer level 850 EVO).
Type-C NGFF hard disk box
After the SSD finally confirmed, there is a lot of hard disk boxes, and there is a lot of products selected on the market. I chose a Taobao hot product using the Type-C interface. The product adopts a metal shell design, which is also a texture.
Details a lot of flux box finished installation
After SSD and hard disk boxes, assembly is also very convenient, the screws are completely rich, but there is a small detail here, the original screws of the hard disk box do not meet the NGFF specification, first of all the screws are one-stage thickness (sub-fine), screw mounting There will be a situation where the left and right is shaking. The most important issue is the hard disk box wall that is completely rooted after the screw is installed, and it cannot be installed directly. Fortunately, you can find the standard screw that meets NGFF. It will neither shake it after installing it. The most important thing is completely free of hard disk box.
The process of installing is simple, first secure the SSD on the PCB of the hard disk box, install the screw fix, then insert it into the track slot of the hard disk box, then fix it with the screw, and finally use the sealing aluminum sheet with double-sided adhesive Seal, make sure the non-screw is directly exposed to the outside.
Simple copy test firepower without full-performance
Below is a simple performance test. Since the main purpose is the copy clip clips of the video, use FastCopy to test the copy rate of the actual large file video. Before the test copy rate, let's take a look at its performance, read 420.25MB / s, write 421.15MB / s, we also tested a separate installation on the motherboard M.2 interface before assembly Results, read 520.49MB / s, write 483.11mb / s, and it seems that performance loss is still a lot.
In fact, this hard disk box has also used the ASMEDIA ASM1153E master, support SATA 6Gbps-USB 3.0 5Gbps, but performance still has little loss, especially 4K random read and write performance, good in 4K read and write basics for daily large file copies Not.
Finally, let's take a look at the actual video file copy rate, we selected a 21702MB video file, in order to avoid the transfer bottleneck, copy object hard drives for a high-performance NVME SSD. Finally, the read and write rates of this hard disk case were 438.2Mb / s and 400.6Mb / s, respectively, and time consuming at 49.5s and 54.2s, respectively, a one-minute copy of a copy of Blu-ray movie.
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