iMac external hard drive, problem consultation

by Poster Dec 12, 2019 48
[iMac (21.5-inch, 2017)] (https://support.apple.com/kb/SP758?locale = en _ CN) This computer, the built-in mechanical disk is probably exhausted. When reading and writing is good, it is 30M, and when it is bad, it is less than 10M. Therefore, if you want to connect an external solid state as the main disk, the system, software, and documents are all placed here. The reason for external connection is that the computer belongs to the company, so avoid disassembling it. I have the following questions to ask you. > Is it better to buy an external mobile solid-state drive or a desktop solid-state + hard drive box? > > Is there any recommended product, preferably one that has been tested. > > When used for a long time, will the speed be slowed down due to the temperature increase? Thunderbolt port, whether it is a hard disk box or a mobile solid-state drive, is more expensive. Therefore, the main consideration is the USB 3.1 interface.

Replies

  • Anonymous12395 Dec 13, 2019
    Mine is also an iMac 21.5 2017 external hard drive that has been used for more than a year, using a regular 256G NVME plus a Type-c Gen2 hard drive box, and it cost less than five hundred in total. It runs normally, and there is no feeling of slowdown. Because it is hung behind the fuselage, I didn't pay much attention to the heat, and I read and write about seven or eight hundred. In the end, I feel that I still have to apply for disassembly and upgrade, because 8G memory is really...
  • Anonymous7948 Dec 13, 2019
    @ Anonymous12395 17 models must be disassembled to add memory?
  • Anonymous12395 Dec 13, 2019
    @ Anonymous7948 Only a 27-inch memory can be upgraded without disassembling the machine, and a 21.5 machine needs to be disassembled. It's not a problem with the 17 model
  • Anonymous7949 Dec 13, 2019
    Don't worry so much, just go to Samsung 860 pro or 970 plus Don't worry about performance, life and heat dissipation, which are the best in the industry. Even if you don't work in Naga Company in the future, you can take it back and use it yourself To be too expensive, simple, take a lighter switch (the kind of power switch, not flint), use the high fire mouth of the motor to discharge the key parts of the electrical appliance, power it, and almost the capacitor of the equipment will be broken.. Then call the company to replace or dismantle the machine
  • Anonymous7949 Dec 13, 2019
    Oh, by the way, it's easier to destroy the mechanical hard disk. Wrap the hard disk (wrapped in cloth or cotton) and hit it with a hammer. The appearance is still wrapped in cloth or cotton without any trauma. Can't tell at all
  • Anonymous836 Dec 13, 2019
    People who have actually used it for more than two years, the company's 2016 or 2015 iMac21.5 or even (I forgot the details), used Samsung 850EVO128G SATA, usb3.0 hard disk box, sequential reading and writing of more than 400 M, random reading and writing than directly plugging into the computer. It is low, but it is definitely many times higher than a mechanical hard disk, so it is absolutely no problem to use. It can be operated immediately after booting without lag. Now with USB3.1 NVME, the speed can be even faster.
  • Anonymous6711 Dec 13, 2019
    iMac2015, Samsung evo solid-state external connection for more than two years, and it is quite sufficient for daily development. For a period of time, I often went to five countries and reinstalled the system to solve the problem. However, some colleagues have a solid-state hang and cannot be booted. It does not feel very stable. It is recommended that the original mechanical hard disk be divided into a partition for Timemachine.
  • Anonymous11034 Dec 13, 2019
    @ Anonymous7949 is probably not as simple as dismissal when it is discovered. It feels like a bad idea.
  • Anonymous7949 Dec 13, 2019
    @ Anonymous11034 Just because trauma can't see it.. That's why it's done.. Is it possible that someone will disassemble the hard disk to see the internal damage of the hard disk on the spot? Besides, even if the hard disk is disassembled, it is common for the magnetic head to damage the swipe disk even if it is put on a normal hard disk...
  • Anonymous7949 Dec 13, 2019
    @ Anonymous11034 Also, it depends on the up owner to do it or not of course, I only offer advice.. It's like someone takes a knife to kill someone, and on the other hand, it's the responsibility of the knife. Is it possible? Also, everyone has different values and different environments. There is no strict distinction between "right" and "wrong" in the decision made.
  • Anonymous2637 Dec 13, 2019
    @ Anonymous5251 # 1 # 1 strongly refuted, the external solid state (set as boot disk) has been used for more than 2 years, and there is no problem at all
  • Anonymous2637 Dec 13, 2019
    @ Anonymous2637 # 31 # 31 The machine is Imac 2015, the hard drive is Samsung 850, and the hard drive case is Orico 6518US3
  • Anonymous5250 Dec 13, 2019
    @ Anonymous7950 # The rebuttal is invalid.
  • Anonymous12396 Dec 13, 2019
    @ Anonymous2050 # 3 Agrees 1L, +1
  • Anonymous11663 Dec 13, 2019
    @ Poster is completely used as the main force, and the performance improvement is very obvious. I have never encountered serious fever. I also have a 2015 iMac, which uses a 256G Western Digital solid-state mobile hard disk, and the performance improvement is also very obvious. The disadvantage is that the capacity is small. Both computers are plugged into mobile solid-state hard disks all the year round, and if they interfere with Bluetooth signals, they are wrapped in aluminum foil. The mobile hard disk can also be plugged into other computers at any time.
  • Anonymous5255 Dec 13, 2019
    There is actually no need to consider the trim problem. Now the firmware of solid-state drives is perfect, and active garbage collection is well done. It is no longer the trim that needed to rely on the operating system 10 years ago
  • Poster Dec 14, 2019
    @ Anonymous7951 Thunderbolt 3 is too expensive
  • Poster Dec 14, 2019
    @ Anonymous5253 When checking, I saw that someone had problems with this brand of disk
  • Poster Dec 14, 2019
    @ Anonymous5257 After you get it done, share it 🎉
  • Poster Dec 14, 2019
    @ Anonymous12395 My memory is 16G. Is your system also installed on an external disk?