Is there a JBOD with distributed writing to all disks?

Question

Iron

The standard JBOD, as far as I know, sequentially fills the disks connected to it, but this is not safe in some cases, for example for backups, all backups will die with the disk. It also reduces the speed of writing files, while one backup is being written, the second one is in the queue.
Are there such controllers (software or hardware) that would write to different disks?
Let's say 5 large backup files of 500GB each arrived at the server, the server has an array of 8 disks, 4 of which are free for writing, the controller will put them on record and one in the queue.

Answer 1

Is there a JBOD with distributed writing to all disks?

Yes, it is called RAID #, where # is 0, 5, 6 and less common or nested RAID levels.
The choice of level depends on the speed or reliability you need.

all backups will die with the disk

Not all. Only those that were on the failed disk will be lost.

5 large backup files of 500GB each arrived at the server, the server has an array of 8 disks, 4 of which are free for writing, the controller will put them on record and one in the queue

I do not exclude that something similar can be organized on some SANs, but it is better to check the specifics with those who are involved in the implementation of such hardware. We mainly see storage systems when everything has already fallen and is not working.
In addition, you are unlikely to be pleased with the cost.

Answer 2

EVGENIJ NEFEDOV , if instead of jbod, format each one under the file system, then compile it through Aufs and issue it to users.