Troubleshooting: Your Array 24119Troubleshooting: Your ArraySafety First—For you and Your ArrayCAUTION: Many repairs may only be done by a certified service technician.You should only perform troubleshooting and simple repairs as authorized inyour product documentation, or as directed by the online or telephone serviceand support team. Damage due to servicing that is not authorized by Dell is notcovered by your warranty. Read and follow the safety instructions that camewith the product.Troubleshooting Storage Array Startup FailureIf your system halts during startup, check if:• The array emits a series of beeps.• The array fault LEDs are lit. See "RAID Controller Modules" on page 29.• There is a constant scraping or grinding sound when you access the harddrive. See "Getting Help" on page 253.Troubleshooting Loss of CommunicationFor information about troubleshooting loss of communication, see"Troubleshooting Array and Expansion Enclosure Connections" on page 247.Troubleshooting External Connections• Verify that the cables are connected to the correct ports beforetroubleshooting any external devices. For the location of the back-panelconnectors on your array, see Figure 3-1.• Ensure that all the cables are securely attached to the external connectorson your array.• For information on cabling, see the Dell™ PowerVault™ MD3200Deployment Guide.