There are 3 types of mobile hard disks: mechanical hard disks, solid state drives, and hard disk enclosure assembly, each with its own characteristics.
1. Mechanical hard disk.
The principle of reading files on a mechanical hard disk is similar to that of a phonograph, the disk rotates at high speed), and the head reads the file, and the faster the disk rotates, the faster the reading speed.
It is precisely because of the contact between the head and the disk (in fact, there is a certain gap, so to make it easy to understand) to transmit data, so the mechanical hard disk is very afraid of bumps, once the reading and writing process falls to the ground, the head and the disk violently collide and cause damage. That's why ThinkPad has added a disk protection feature to its hard drive — once a bump is detected, the head automatically leaves the disk and returns to the head berthing area to avoid collisions, thus protecting data.
Disadvantages: First, I am afraid of turbulence, as mentioned above;The second is that it is slow, large, and heavier, 3The 5-inch disc is not suitable for moving, 2The 5-inch one is still a top one compared to SSDs;The third is that it has been used as a system disk for a long time and needs to be defragmented, otherwise it will affect the speedFourth, there is noise in the rotation of the disk;Fifth, the power should not be cut off suddenly during use.
The advantage is that it is cheap, large capacity, long life under normal use, and the current monitoring of writing and erasing is still using mechanical disks all the time, the reason is that it is not limited by the number of writes, it is not to fall, do not turn it up and down to use it for a long time, and your domestic turtle is not necessarily hung on the hard disk.
Suitable use: not sensitive to speed, requires a lot of storage, such as: storing movies, ** design materials, etc.
2. Solid state drive.
SSDs are suitable for high-end users who require speed and size. At present, the vast majority of SSDs rely on flash memory to store data, and the transfer process is similar to a USB flash drive, unlike a mechanical disk with a sector concept, and the factors that affect the speed of SSD are mainly flash memory, main control, and interface (30 or above interfaces have no effect on the U disk). With the development of technology, the transmission speed, size, weight, and cost will become smaller and smaller, and maybe one day it can replace the USB flash drive (not yet).
Advantages: First, the speed is fast, the speed can reach 1000MB, and the mechanical disk is up to 200MB s;Second, it is light in weight, and the current notebook has no mechanical disk;The third is that the volume is small, and some are not much larger than the USB flash drive;Fourth, it can come with encryption function, 256-bit hardware encryption, which is difficult to crack.
There are 2 disadvantages: one is that the hard disk with good performance is expensive, and the thief is expensive, like the 1000MB s speed of Western Digital My Passport 1T sells for 969 yuan, and the 1T mechanical disk is more than 300 yuan;The second is that it has a service life, and the service life is related to the number of write erases, and the 1T disk of the average person TLC is enough.
3. Assembling the SSD enclosure.
Buy your own hard disk enclosure, hard disk, and assemble it yourself, it has the advantages of solid-state mobile drives, and it also has the disadvantages of solid-state mobile drives. The difference is that the shell is personalized, the speed can be freely chosen, and it can reach 7000MB s (the key is whether the interface supports it), and now the maximum mobile SSD is only 2000MB s.
It is suitable for enthusiasts who pursue extreme speeds, or gamers who want to combine a USB flash drive and a portable SSD into oneBut I don't recommend it for the following reasons:
In pursuit of speed, the interface of the hard disk enclosure currently only supports USB40, Thunderbolt 3, the speed is about 2700MB s, and such a mobile hard disk has been finished, not to mention that this kind of hard disk case is worth 999 yuan;
If you want to combine a USB flash drive and a hard disk into one, the hard disk case is too long and too thick, and the size of the dual-interface wireless version of Greenlink's CM298 is 136*34*13mm, don't look at the length of 13 cm, just look at 1The thickness of 3 centimeters affects portability, not to mention the visual effect ......I'll go up to the picture!
Now there is a 22 30mm solid state drive, the size is very small, if you buy a hard disk enclosure to choose 2230 specifications are better, small size, portable, not slow, you can also use it as a U disk, but the existing 2230 hard disk enclosure I didn't find a favorite.
4. Difference summary.
Second, the choice of capacity.
People who want to buy mobile hard disks must have computers and USB flash drives, and mobile hard disks are supplements when the computer disk is not enough, or the expansion of the USB flash drive capacity is not enough.
The capacity of mechanical hard disk starts from 1t and can reach up to 20t;SSDs start at 500G and currently reach a maximum of 4T. Recommendations on capacity, type:
1. To save **, movies, it is recommended that the mechanical hard disk, the more the capacity, the better, because the speed requirements are not high, and the mechanical disk is enough;
2. As a supplement to the U disk, it is recommended to combine high-speed U disk + mechanical hard disk if the frequency of use is not high
3. If there is a demand for speed and high frequency of use, it is recommended to have a solid state disk of more than 1T, because now there is a 1T USB flash drive, and there is no need for a 500G hard disk
4. If you have extreme requirements for speed, such as installing games on the disk, running large-scale software, etc., it is recommended to assemble the hard disk enclosure to avoid unpleasant play due to hardware reasons.
In short, most people have enough 1t, the more data they need to store, the better, and if they need to be stored for a long time, it is more appropriate to buy a disc - keep it for a long time and not be afraid of falling.
3. Mechanical hard disk is recommended.
Traditional mechanical hard disk manufacturers mainly include Toshiba, Western Digital and Seagate, they rank the top three in the sales statistics of maigoo.com, and the top three on the "Top Ten Brands List" are also these three, and the ranking order has not changed.
Their HDD products are summarized below:
Combined with **, the hard drives worth buying are recommended as follows according to the use:
1. For personal use, Toshiba partner or slim is recommended
Recommended reason: a. Plug and play, good compatibility, formatted as EXFAT (generally NTFS) at the factory, can be well compatible with Windows and macOS;
B. The appearance is simple, black matte, good feel, not easy to fall in the hand, and the low-key appearance can also be used for office;
c. The speed is not slow, and the sequential read and write speeds are about 150MB s
d. Affordable, low in all mobile mechanical hard disks, especially suitable for sensitive users
The disadvantage is that there is no encryption, backup function, if you have such needs, and the pursuit of the ultimate light and beautiful, buy this slim is more suitable.
Recommended reason: a, this hard disk has password protection function, it is difficult to crack, you can encrypt your own more private data, so as not to be seen after loss and cause trouble;Files that are not convenient to put in the computer or mobile phone can also be stuffed into the mobile hard drive
b. With backup function, personal data can be backed up at any time
C, aluminum alloy matte shell design, textured, no fingerprints, ** cheap, 1t sold for 339 yuan, 2t sold for 439 yuan, spend an extra 100 yuan to buy a 2t I think it is more suitable;(It will be cheaper during the big sale).
d. Very thin, only 9mm thick for 1t, and only 12mm for 2t5mm；
e. The weight is also light, only 115g, and the 2T version is 149g, which is more convenient to take out often, light and thin.
f. It is also very suitable for light office, especially for individual users.
2. For computers with Type-C interface, WD My Passport ULTR is recommended
Recommended reason: a. Metal shell, matte design, textured, easy to dissipate, no fingerprints;
B, 1T, 2T version weight 130g, in the above table of Type-C interface hard disk is the lightest, easy to mobile office, in the case of a slight bump is not a big problem;
c. 256-bit hardware encryption, extremely difficult to crack, worry-free personal privacy;
d. It can be automatically backed up, after setting the folder that needs to be backed up, all the internal files will be automatically backed up, without the trouble of manual backup.
3. For commercial use, Seagate Ming series encryption version is recommended.
Recommended reason: a. The most important thing is to provide data rescue once every 3 years;It means that once the hard disk is damaged, the manufacturer is responsible for retrieving the data, and the key is free!
b. The data protection function is very useful for business use, and the encrypted version is also available, which can effectively protect business secrets
c. The appearance is good-looking, the metal brushed design, and the blue, red, and pink options, and I am also in favor of individual users choosing this;
D. Configure ToolTik software, after setting, it can realize automatic backup like Western Digital Ultra, not afraid of loss, not afraid of damage, if you back up yourself, you can retrieve the data, if you don't back up, the manufacturer can provide 1 free rescue service.
4. The game, reluctantly recommended Toshiba gaming
The reason why it is reluctantly recommended is that mechanical hard disks are limited by technical conditions, the transfer speed is not as fast as SSDs, and direct running games is not as good as low-end SSDs.
But the mechanical disk is cheap, and you can use this to save it when there are many games and you can't put it in the SSD;It's no problem to use this disk for games that don't require high network speed and hard drives.
The key is that Toshiba Gaming supports Windows, Mac, Xbox, and PlayStation at the same time, and it is convenient to use Xbox to play games and plug in to play.
Fourth, SSD recommendation.
Let's first summarize the products of the main brands on the market, these brands have several characteristics, one is the large sales volume, the other is the strength of the storage field, among which the Western Digital-SanDisk Alliance, Samsung can produce its own flash memory particles, Seagate is leading the development trend of HDD hard disks, the HDD field is quite strong, and even acquired Samsung's HDD hard disk business, the strength of the solid state drive is also good, but I prefer the brand that can produce its own flash memory particles, the higher the degree of autonomy, the more I preference.
The following is a comparison of the products of 4 mainstream brands (the new version of the parameters used by the SanDisk e61, the old version is still on sale), of which ** is 20234.12 of the JD self-operated price.
1. For business users, we recommend the Western Digital My Passport on-the-go SSD version, followed by Samsung T7 Shield
Recommended reason: a, the accompanying version of the SSD hardware 256-bit encryption technology, automatic backup, both are rare in solid-state mobile hard drives, very suitable for data sensitive, data loss loss of business users;The Samsung T7 Shield has 256-bit hardware encryption, which is a pity that it doesn't have an automatic backup feature, but it does have good off-cache speeds
B, the speed is relatively fast, the read speed is 1050MB s, the write speed is 1000MB s, which belongs to the current mainstream level, and the speed of 500MB S below this speed can be done;
c. In terms of weight, the My Passport accompanying SSD version is only 457G, T7 Shield focuses on 98G, MP is relatively lighter, T7 Shield is stronger;
d. The thickness is obvious two choices, Western Digital 9mm, Samsung 13mm, do not go to the harsh environment to choose Western Digital, often outdoor buy Samsung;
e. All metal shells, especially T7 aluminum alloy integrated structure, IP65 waterproof and dustproof, can be taken to deserts, wetlands and other places with large wind and dust;
F. Shock-resistant and fall-resistant, Western Digital MP can resist free landing at a height of 2 meters, and Samsung T7 Shield is 3 meters anti-falling, and it is not afraid of landing when it is often taken out
g. Choose MP for white-collar office, and buy T7 shield for outdoor work.
2. For individual users, the SanDisk E61 Superior Edition is recommendedFor heavy users, Samsung T9 is recommended
Reason for recommendation: a, small size, 895mm thick, except for Samsung T7 Touch, no one is as thin as him;Weight 385G, no one in the ** above is as light as him;
b. Drop resistant 3m, shockproof and impact-resistant;Waterproof and dustproof, IP65 rated;In terms of design, the winner of the 2021 Red Dot Design Award;The new version of E61 also adds hardware encryption function, which is more practical;
c. Fast speed, 1050MB s read speed, 1000MB s write speed, which is also considered the mainstream speed;
d. 5-year warranty, I don't know why SanDisk, which has a lifetime warranty at every turn, why only gives a 5-year warranty, even E81 is only 5 years, but 5 years is still a long time, because it is generally only 3 years warranty;
e, the disadvantage is the plastic shell (so light), the cache outside the performance is general, if you don't often copy dozens of GB of files to buy it is suitable, if you often copy **, large design files, buy a faster T9 better;
F、**E61 sells 100 yuan more expensive than the Western Digital My Passport accompanying SSD version, and the cost performance is average.
ps:Now E61 has just been replaced with a new version,Jingdong's self-operated new and old versions are shipped randomly,If you are not in a hurry, you can wait for the old version to run out of inventory before starting。
Recommended reason: a, fast transfer speed, real USB32 ports (Gen2 2), read speed 2000MB, 1 2TB version write speed 2000MB s;
b. Anti-throwing and shock-resistant, the only two mobile SSDs that resist 3 meters of free fall (the other is T7 SHIELD);
c. AES 256-bit hardware encryption, which is very difficult to crack
d. The official warranty is 5 years
E. The disadvantage is that it is larger and weighs a little more than the competing Western Digital P40, but it has more password protection and is more resistant to drops, and there are more 4TB versions to choose from.
4. For gamers, Western Digital D50 or Seagate Xbox expansion cards are recommended.
Recommended reason: A, fast speed, Western Digital D50 read speed 3000MB s, write speed 2500MB s, Seagate is launched in cooperation with Xbox, read and write speed is the same as the original Xbox;To play a game, you have to be fast, and if the speed is slow, it's not good to play, so it's better not to play;
B. In order to maintain high speed, D50 adopts Thunderbolt interface, Seagate is dedicated, directly plugged into the Xbox console;
C, D50 comes with RGB lighting effects, with RGB host, the style is consistent;And it comes with 11 interfaces such as Thunderbolt 3, USB-A C, microphone, DP, etc., which are powerful
D. Seagate is designed for Xbox, the size is particularly small, only 1 3 of the bus card area, it is the official designated expansion card, damaged within 3 years, and the official data recovery service is provided;The D50 is compatible with Xbox and PS5, and can also be used on PC and Mac, which is more compatible;
e. The disadvantage is that the D50 head is too large (560g), more than a pound and heavy, several layers thicker than the general hard disk, and it is not very convenient to take it outSeagate can only be used on Xbox, not PC or Mac.
Above, the article is very long, thank you for reading it.