Hi all, I have the Pegasus2 R4 with 4x4TB HDD connected to a MacPro late 2013. My unit was having issues where it would randomly unmount and remount causing multiple "Your disk was not ejected properly" messages. Then several days ago the volume unmounted, the power button light turned orange, and could not be shut down via the, now, orange button. The thunderbolt light is lit and blue, the fan is spinning, all of the drives are showing blue and spinning up when powered/plugged in. Also, on occasion, it causes a kernel panic. The system report shows that it was caused by com.promise.driver.stex. There is no window in the Promise Utility app and all the menu items are greyed out.  

Here's what I've tried so far:

  • Unplugged the unit, waited (up to 24hrs) and plugged it back in
  • Let it run for 24hrs to see if it would sort itself out
  • Removed the drives and start up
  • Tried changing ports both on the Mac and the unit 
  • Checked system info - thunderbolt, and it was listed there, although it showed only as connected upstream
  • Disk utility
  • removed and reinstalled com.promise.driver.stex
  • removed and reinstalled the Promise Utility app
  • Removed power cable from UPS and tried directly in wall socket
  • Tried the promiseutil comand line interface (Error (0x4008): subsystem not found)
  • Fully cleaned dusted the unit
  • Tried different rebooting orders (mac then unit, etc)
  • Fully clean and dusted Mac
  • Reset the SMC
  • Reset the PRAM/NVRAM
  • Cleared caches on mac
  • Ran the maintainance scripts in terminal
  • Inserting the disks one at a time
  • Swearing at the unit and callling it names

Thanks in advance for any help or creative suggestions you all can send my way. All of my work is located on those drives and deadlines are looming. If there is something that I've missed (a hidden magic button I can poke with a paperclip would be great) or something I can point to and blame for this. Please let me know.

Cheers!