Hi,
some suggestions:
some suggestions:
- which type of cooling do you use in the system? The SMP lockup issues might be related to this, see https://forum.pine64.org/showthread.php?tid=5369
- did you try to reproduce the issue with the psu from the working system? There have been some reports here on the forums about issues with the 5A psu shipped by Pine64 (another explanation could be that your new disks draw more power than the old ones, in this case it should fail with both psus).
- which version of the board do you have? It seems like earlier versions have a resistor issue - see here: https://forum.pine64.org/showthread.php?tid=8374