Dell PowerVault MD3420 - Manual (Page 35)

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Troubleshooting Your System
Safety First—For You and Your System
CAUTION: Many repairs may only be done by a certified service technician. You should only
perform troubleshooting and simple repairs as authorized in your product documentation, or as
directed by the online or telephone service and support team. Damage due to servicing that is
not authorized by Dell is not covered by your warranty. Read and follow the safety instructions
that came with the product.
NOTE: To replace a RAID controller, always hot plug the replacement controller when the array has
been powered on.
All new hard drives should be hot plugged to the array.
Do not use drives or RAID controllers from other arrays.
Troubleshooting Storage Array Startup Failure
If your system halts during startup, check if:
• The array emits a series of beeps.
• The array fault LEDs are lit.
• There is a constant scraping or grinding sound when you access the physical disk.
For assistance, contact Dell Support.
Troubleshooting Loss of Communication
For information about troubleshooting loss of communication, see Troubleshooting Array and Expansion
Enclosure Connections .
Troubleshooting External Connections
• Verify that the cables are connected to the correct ports before troubleshooting any external devices.
For the location of the back-panel connectors on your storage array, see Back Panel Features and
Indicators .
• Ensure that all the cables are securely attached to the external connectors on your array.
• For information on cabling, see the Deployment Guide for your storage array at dell.com/
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