Owners Manual

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 are shipped with your product.
Topics:
• Troubleshooting storage array startup failure
• Troubleshooting loss of communication
• Troubleshooting external connections
• Troubleshooting power supply modules
• Troubleshooting array cooling problems
• Troubleshooting expansion enclosure management modules
• Troubleshooting physical disks
• Troubleshooting array and expansion enclosure connections
• Troubleshooting a wet storage array
• Troubleshooting a damaged array
• Controller failure conditions
Troubleshooting storage array startup failure
NOTE:
If you need to replace a RAID controller, always hot plug the replacement controller when the array is powered on.
All new hard drives should be hot plugged to the array. Do not use drives or RAID controller from another (foreign) array.
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 the Back-panel features section in this document.
● 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/support/manuals.
4
34 Troubleshooting your system