Thank you for your patience, I have to attend class in the morning and I can only wait until school is over now to reply to you! Your suggestion is really worth thinking about. You mentioned that as a rule of thumb, dismantling and moving disks periodically can cause them to fail. This is indeed something I have not considered, and on reflection I have realized that this is detrimental to the security of my current data storage. I am going to do as you say and keep the nas disk as a separate carrier on one machine and not remove it again. In fact, after reviewing my usage requirements again, I realized that what I actually need is a disk array with a little bit of nas functionality attached to it. My goal is to be able to access files in the same place on 2 computers and an ipad at home, I don't actually have a scenario where I need to use it away from home yet, and the network environment where I'm currently located doesn't allow me to expose the nas port (no public ip). I have one more question after reading your answer: after using snapraid and mergerfs to build several hard disks into a large pool, what should I do if I need to add hard disks to this pool or if one of the hard disks in the pool goes bad? my machine is a separate finished nas. i've looked at other people's experiences with it, and i think i still need to add another strip of ram to 8gb. i was actually considering freenas/truenas at first, but the zfs file system seems to be exceptionally demanding on ram? My data is basically long term storage oriented, with a relatively low amount of changes/writes, and only reads from time to time, which is just close enough to the snapraid usage profile. I just came across this article which describes the working conditions which are very suitable for my actual needs. Because my data are basically cold data, I think it is acceptable to take a 18t hard disk for disaster recovery. Regarding your question "Maybe I misunderstood, but you told me that your hard disk is installed on multiple machines. That means different file systems, doesn't it? How do you currently work?" This is probably a mistake in my description, because English is not my native language, and my writing "Chinese" is quite different from English, there are some situations that I can't express very well. To summarize, a. In unraid, there are 3 hard disks with xfs filesystem, which are placed in nas for a long time and not removed. 1 hard disk has ntfs filesystem, which can be removed via UD plugin github.com/dlandon/unassigned.devices/raw/master/ unassigned.devices.plg to be accessed as a removable drive. b. In Windows, I placed 2 hard drives that use the ntfs format. c. In mac I placed 1 hard drive that uses the apfs format to be used as a Time Machine disk. Usually my needs are to read and write to other ntfs disks by installing ntfs read/write software in the mac. Because of my very messy file system and disk management model, I'm thinking of reorganizing my data to make sure my data is secure and easy to manage. I wonder if this is a site you have built yourself? The design is very modern and minimalist and the browsing performance is good. But from what I can see it seems like it automatically logs out every other day it's not online? I need to re-click to log in, so I'm not sure if that's just me or if it's a common occurrence. If this doesn't happen to others, maybe I'm using a proxy node (VPN) to access? Lastly, thank you for taking time out of your busy schedule to share and discuss with me! Your answers have been very helpful and I've benefited greatly from them. You mentioned that you are French and I am currently living in mainland China. However, due to government policies and the strict blocking of the internet, it is very difficult for me to access knowledge effectively, and I can't do what I want to do due to the high-pressure in-scroll environment and the 6:30-22:00 study schedule six days a week. Therefore, I plan to go to university in Germany next year to get out of this high-pressure environment! See your current project is a tomato clock software? Seriously the moment I saw the description I fell in love with it because of its ui design. It's like it's called neomorphic design style and I really like it! Looking forward to your finished product. You mentioned that you want to travel the world all year round and have your own business, and I have the same dream as you! I envision and admire the things you have done and served as CTO! I also have an outside-the-box interest in traveling, having visited very many cities in China on my own when I was 16, and traveled to Singapore and Japan just this past winter break and Lunar New Year. France is a place I've longed to visit, and the first country I visited in my life was France, which left a deep impression on me. I wish you the best of luck in your health and career and success in achieving your goals. You are also welcome to come to China to have some fun. Putting aside the political factors, there are special green mountains and natural scenic spots, as well as many humanistic buildings or museums. Especially the many low-priced and delicious cuisines over here. And you should have heard of Huaqiangbei「华强北」Electronic World in Shenzhen. It's only 100km from where I live, and I got to experience VisionPro there! I've followed you!