An interesting problem worth noting that happens on Dell PowerEdge systems is fan failure. There can be multiple causes of this
- The fan may wear out
- It may be switched off in the computer settings
- The power lead to it may become disconneted
During a recent site visit to a Manchester with a broken Dell server, we discovered the cause of failure to be a non functioning fan. This had resulted in the hard disks becoming overheated and the system failing. Here’s how we fixed the fan problem:
To locate a fan, right-click the bad fan and click Properties. The Enclosure ID field indicates the ID number of the enclosure where this fan is located. Be aware that the enclosure ID number displayed by Array Manager does not match the Enclosure ID set on the switch module ID indicator on the back of the PowerVault 660F or 224F enclosures. When the switch module ID indicators on all the enclosures are configured properly, the enclosure ID numbers start at 0 and continue sequentially through 7. The enclosure ID numbers displayed by Array Manager, however, start at 1 and continue sequentially through 8. For this reason, the enclosure ID number displayed by Array Manager will be one greater than the number set on the switch module ID indicator on the back of the PowerVault 660F or 224F enclosures. For example, if the switch module ID indicator identifies the enclosure as 0, the Array Manager enclosure ID will be 1.
See the Dell PowerVault 660F and 224F Storage Systems Installation and Troubleshooting Guide for information on how to troubleshoot the Advanced Cooling Module (ACM). See the Dell PowerVault 660F and 224F Storage Systems Service Manual for part replacement procedures.
After troubleshooting or replacing the ACM, go to the Array Manager console and click to expand the Arrays storage object, right-click the PV660F Subsystem storage object, and select Rescan from the context menu that comes up. This action will update the fan status within the GUI.
For a decent RAID primer, especially regarding user data, it’s preservation and what to do if the data is compromised, see the primer at http://raidrecovery.pen.io/