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Basic Troubleshooting : Dell PowerVault 220S and 221S Systems Service Manual
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Basic Troubleshooting
Dell™ PowerVault™ 220S and 221S Systems Service Manual
Overview
Safety First—For You and Your System
Indicators Overview
Troubleshooting SCSI Hard Drives
Overview
This section provides information to help you troubleshoot problems with your storage system and its components. It includes a
summary of common system faults along with corrective actions. This section focuses primarily on hardware-based
troubleshooting. For more information on troubleshooting using storage system configuration and management software, see
your array management software documentation. See
indicators. Dell recommends that you perform the following procedures in the order presented.
NOTE:
When you see the question "Is the problem resolved?" in a troubleshooting procedure, perform the operation that
caused the problem.
Safety First—For You and Your System
Do not attempt to service the system except as explained in this guide and elsewhere in Dell documentation. Additionally, before
you service the system, review all of the procedures in "Safety Instructions" in your Product Information document.
Connecting SCSI Cables
System failures are frequently caused by unseated or disconnected cable connectors. Cables can become faulty or connector
pins bent from normal system maintenance and reconfiguration. With any system failure, ensure that the system cabling is not
the source of the problem.
When connecting the SCSI cables to your storage system, observe the following guidelines:
If your SCSI card connector has a protective plastic collar like that shown in
collar.
Figure 9. SCSI Connector Collar
Before joining the connectors, ensure that the long and short edges of each connector are aligned for correct insertion, as
shown in
Figure
10.
Figure 10. Connecting the SCSI Cable
file:///C|/Users/rishi_sood/Desktop/220s/en/sm/basics.htm[3/7/2013 12:09:14 PM]
Troubleshooting the System
Troubleshooting a Cooling Module
Troubleshooting a Power Supply
Troubleshooting Common Faults and Errors
"Components and
Indicators" for locations of front- and back-panel LED
1 plastic collar (do not remove)
2 SCSI controller card
Figure
9, do not attempt to remove the