I have a Pegasus R4 with three 2TB drives. Yesterday, I noticed it won't mount on the iMac and the red power button is on but the drives show blue.
After turning it off, removing drives, and unplugging and plugging cables back in, I see that one of the three hard drives is only showing a single blue light instead of two blue lights like the other two drives.
I did not have the Promise Utility installed until this morning, so not sure the subsystem report will do any good.
Please advise next steps.
Thank you for your assistance.