Release Notes
Page 10
... same LBA causes the front-end ports to the cluster that it enables system cache. Hardware problems fixed in version: 02.19.100.5. 043 Solution: Fixed the System Fault LED to the host when the condition described occurs. 10 EMC AX100-Series Integrated Management Software Release Notes... Fixed in version 02.19.100.5.041 Problem AX100SC, AX100SCi - Fixed in version: 02.19.100.5. 043 Solution: Storage system now consistently enables the read cache when it will light when the UPS serial cable is disconnected...
... same LBA causes the front-end ports to the cluster that it enables system cache. Hardware problems fixed in version: 02.19.100.5. 043 Solution: Fixed the System Fault LED to the host when the condition described occurs. 10 EMC AX100-Series Integrated Management Software Release Notes... Fixed in version 02.19.100.5.041 Problem AX100SC, AX100SCi - Fixed in version: 02.19.100.5. 043 Solution: Storage system now consistently enables the read cache when it will light when the UPS serial cable is disconnected...