This is not the first issue I've had with the HBA if that is the problem.
I had initially wanted to use the HBA as a solution for future expansion, and also learning that SAS ports seem to be more reliable than onboard SATA.
I'm currently doing a parity check, which I hope will (maybe temporarily) fix my problem at the moment.
If I end up going through the same problem in the near future then I would probably switch to the onboard SATA anyway.
Would you think that it might be a power issue? There's an available port to be connected by the PSU, that I read was generally meant for rack mount servers. Just spitballing here.