Which NAS to choose?

Question

Iron

Hello.
A solution for a home network, but requires, first of all, high reliability (availability is not so critical).
It is necessary to store 3 types of data:
1) Source Codes
Hundreds of thousands of small files, many <1kb. For the most part archival storage, but with the possibility of fairly quick access. (up to an hour - ok). There are currently about 500GB of them in total.
Perhaps a git repository with online access.
Everything must be encrypted.
There is no way to lose.
2) Photos / videos. (Currently ~1-1.5tb)
From 5mb per file. Content is unique, i.e. losing is highly undesirable, but partial loss is not fatal. Mostly archived. Perhaps there will be rare external access to view galleries or the like through a password.
3) Just common network files, routine. Music, movies, torrents, etc. (currently ~ 1 TB)
You can lose, information is renewable. But frequent quick access is needed.
Here are my thoughts, which may not be correct. Please fix it.
Instead of using raids, I'm thinking of setting up scheduled backups. The logic was that I do not need emergency access to stored data, so I see no point in loading 2 disks for permanent work.
To control the integrity of both the source disk and the disk for backups will have a file system with this capability (such as zfs).
I assume that you can do the current task with 4 disks of 2TB each. I thought about the option with 1 array of 4 disks or 2 x 2 disks, although other options can be considered.
The first disk with a small cluster size for the first data type.
Daily backup to disk 4.
Monthly copying to a separate usb disk, which is on the shelf.
Additional copying of especially important documents to dropbox/google drive/s3.
The second disk with a larger cluster size.
Backup on the 4th disk of only light versions of files (ie instead of 100 MB raw, a light jpg for a couple of MB is created). If the original is lost, at least a “memory photograph” will remain. Especially valuable pictures (of which there are few) are backed up in their entirety.
Third disk with standard cluster size.
It will be the main load. Music / movies will be streamed to the network.
Torrents will also be downloaded to it and will generally be used as a file storage.
The fourth disk is a disk for backups.
Used exclusively for backup purposes.
Currently settled on 2 options:
qnap TS-563 and Synology DS1515+
They have five disks (one in reserve) and are quite powerful so that working tools can be deployed on their basis.
According to all reviews, qnap is noticeably in the lead (except for software), but they cause a strong feeling that someone paid for them.
What is planned to be placed on the NAS from the software:
- I don’t even take into account the standard set for such devices
- Gitlab (up to 5 people access)
- Jenkins
- Nodejs + mongodb application (which will be assembled from the git just), access is rare ( for tests), not resource-intensive
Perhaps the latter will be inside the virtual machine
Thanks for the help.
upd 1.
Apparently, everything that I want cannot be implemented on the basis of eminent NAS's due to the limited choice of FS.
Perhaps look towards The FreeNAS Mini?
ups 2.
It was decided to assemble a server from scratch based on FreeNAS and introduce functionality incrementally: first the most necessary and then according to the availability of time for settings.

Answer 1

Forget about any type of ready-made network storage! So sometimes soooo pearls come out. Hair stand on end. Take the mother on a simple proce of the last generation. Take the case under 4 screws with hot removal. Decide on an axle. And only then will you sleep peacefully, without worrying about your data.

Answer 2

Storage is not about reliability but about availability. Reliability is three copies of backups

Answer 3

www.seagate.com/ru/ru/products/network-attached-st...
or
2-3pcs. with RAID 1: www.3dnews.ru/921713

Answer 4

Not quite in the subject, but I have organized the storage of digital bins for security and reliability as follows (conditionally):
1) Working materials of current projects - local disk + synchronization via Google Drive + Various cloud solutions for collaborating with code, design, graphics and other Requirements - security, accessibility, interoperability version.
2) Archives of documentation and working materials for projects and their backups and multimedia bins, including family ones - photos and videos, my personal Knowledge Base - files, presentations, video tutorials, documentation, etc. etc.) - Local disk.
I backup everything locally to an external drive and to Amazon Cloud Drive using the local Syncovery software.
3)Servers at the provider . The backup goes locally, to the second server, to Amazon Cloud Drive.
Separately, about Amazon Cloud Drive + Syncovery. Amazon has unlimited space for $59 or $69. Syncovery can download in different modes not only from the local disk and any network devices, but also from other external services! Those. I collect backups from servers via ssh, from several clouds.