HP Surestore Disk Array FC60 HP SureStore E Disk Array 12H User's and Service - Page 254

Appendix D. Back-to-Back Racking Troubleshooting Indicator LED States Both green This is the rack's normal operating state. Power is being delivered from both LEDs lit PDUs and to all the fans. Fans should be running normally. One amber LED lit Two amber LEDs lit One bank of LEDs not lit No LEDs lit One or two of the three fans are not operating, probably due to a physical failure. Two or three fans have failed. This condition is unlikely to occur. When one bank of LEDs is not lit (no green, no amber), power from one of the PDUs has failed. One or two of the cooling fans are not spinning. This is a likely indication that the PDU is not supplying power to the rack. For redundant solutions, some power is likely being delivered to array enclosures from the, remaining, PDUs. All power to the fan assembly has failed. Also, it is likely that two PDUs have failed and are not providing power to the arrays. Racking 254