It seems the RAID issues mentioned in recent posts have been resolved. On Friday, I upgraded the firmware on the controller and rebooted. 5 days later, the status is still OK:
$ sudo /usr/local/sbin/tw_cli info c0 u0 Password: Unit UnitType Status %RCmpl %V/I/M Port Stripe Size(GB) ------------------------------------------------------------------------ u0 RAID-10 OK - - - 64K 195.548 u0-0 RAID-1 OK - - - - - u0-0-0 DISK OK - - p0 - 65.1826 u0-0-1 DISK OK - - p2 - 65.1826 u0-1 RAID-1 OK - - - - - u0-1-0 DISK OK - - p6 - 65.1826 u0-1-1 DISK OK - - p5 - 65.1826 u0-2 RAID-1 OK - - - - - u0-2-0 DISK OK - - p3 - 65.1826 u0-2-1 DISK OK - - p4 - 65.1826 u0/v0 Volume - - - - - 195.548
I’m confident enought now that I’ve turned on autoverify, which had never been on before. :)