Is There A Free [portable] Version Of Unraid -

The gold standard for data integrity. It uses the ZFS file system, which is incredibly stable but less flexible with adding mismatched drives than Unraid. Check out TrueNAS.

If your budget is $0 and you cannot justify the $59 entry fee, there are excellent open-source alternatives available: is there a free version of unraid

Unraid provides a fully functional that includes every feature available in the paid versions. There are no "locked" features or limits on the number of hard drives during this period. Trial Duration: 30 days. The gold standard for data integrity