SoftRAID causing kernel panic on Sequoia

@gkanai 
A single drive in an enclosure dropping out is indeed something to be concerned about.
Identify it and give it a SoftRAID Disk label if you have not already,  so you can track it.
If it happens again, swap it with another drive bay. Then note if the drop out follows the drive, or the enclosure bay, so you know what is at fault.