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. . 44 Removing the Backplane . . . . . . . . . . . . . . 44 Contents Installing the Backplane . . . . . . . . . . . . . . 47 4 Troubleshooting Your Enclosure . . . . . . . 49 Safety First—For You and Your Enclosure . . . . . . . 49 Troubleshooting Enclosure Startup Failure . . . . . . . 49 Troubleshooting Loss of Communication . . . . . . . . 49 Troubleshooting External Connections . . . . . . . . . 49 Troubleshooting Power Supply/Cooling Fan Module . . 50 Troubleshooting Enclosure Cooling Problems . . . . . 51 Troubleshooting Enclosure Management Modules . . . 52 Troubleshooting Hard Drives . . . . . . . . . . . . . . 53 Troubleshooting Enclosure Connections . . . . . . . . 54 Troubleshooting a Wet Enclosure . . . . . . . . . . . . 54 Troubleshooting a Damaged Enclosure . . . . . . . . . 55 5 Getting Help . . . . . . . . . . . . . . . . . . . . . . . 57 Contacting Dell . . . . . . . . . . . . . . . . . . . . . 57 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Contents Contents About Your Enclosure Front-Panel Features and Indicators Figure 1-1. Front-Panel Features and Indicators—Dell™ PowerVault™ MD1200 1 2 3 5 4 6 Figure 1-2. Front-Panel Features and Indicators—Dell PowerVault MD1220 1 2 3 4 6 5 About Your Enclosure Item Indicator, Button, or Icon Description Connector 1 Enclosure status LED 2 Power LED 3 Split mode LED 4 System identification button The enclosure status LED lights when the enclosure power is on. Lights blue during normal operation and when the host server is identifying the enclosure. Blinks blue when a host server is identifying the enclosure or when the system identification button is pressed. Lights amber when the enclosure is turned on or is reset. Blinks amber when the enclosure is in the fault state. The power LED lights when at least one power supply is supplying power to the enclosure. The split mode LED lights when the enclosure is in a split-mode configuration. If the LED is not lit, it indicates that the enclosure is in a unified-mode configuration. The system identification button on the front control panel can be used to locate a particular enclosure within a rack. When the button is pushed, the system status indicators on the control panel and the EMM blinks blue until the button is pushed again. About Your Enclosure Item Indicator, Button, or Icon Description Connector 5 Hard drives 6 Enclosure mode switch PowerVault MD1200—Up to 12 3.5-inch SAS hot-swappable hard drives. PowerVault MD1220—Up to 24 2.5-inch SAS hot-swappable hard drives. When set in the top position, the enclosure is configured in unified mode. When set in the bottom position, the enclosure is configured in split mode. Front-Bezel Features and Indicators Figure 1-3. Front-Bezel Features and Indicators 1 2 3 About Your Enclosure Item Indicator, Button, or Connector Icon Description 1 Enclosure status LED The enclosure status LED lights when the enclosure power is on. Lights blue during normal operation and when the host server is identifying the enclosure. Blinks blue when a host server is identifying the enclosure or when the system identification button is pressed. Lights amber when the enclosure is turned on or is reset. Blinks amber when the enclosure is in the fault state. 2 Power LED The power LED lights when at least one power supply is supplying power to the enclosure. 3 Split mode LED The split mode LED lights when the enclosure is in a split-mode configuration. If the LED is not lit, it indicates that the enclosure is in a unified-mode configuration. About Your Enclosure Hard-Drive Indicator Patterns Figure 1-4. Hard Drive Indicators 1 2 1 hard-drive activity indicator (green) 2 hard-drive status indicator (green and amber) Drive-Status Indicator Pattern (RAID Only) Condition Blinks green two times per second Identify drive/preparing for removal Off Drive ready for insertion or removal NOTE: The drive status indicator remains off until all hard drives are initialized after system power is turned on. Drives are not ready for insertion or removal during this time. The Dell PowerEdge™ RAID controller PERC H800 may take up to a minute to discover and initialize all the hard drives. About Your Enclosure 12 About Your Enclosure Back-Panel Features and Indicators Figure 1-5. Back-Panel Features and Indicators Blinks green, amber, and off Drive predicted failure Blinks amber four times per second Drive failed Blinks green slowly Drive rebuilding Steady green Drive online Blinks green three seconds, amber three seconds, and off six seconds. Rebuild aborted Item Indicator, Button, or Connector Icon Description 1 Power supply/cooling fan module PS 1 600 W power supply. For more information, see "Power Indicator Codes" on page 17. 2 Primary enclosure management module (EMM) EMM 0 The EMM provides: • a data path between the enclosure and the host server. • enclosure management functions for your enclosure. 3 Seconda...