Dell H310 User Manual

Contents

Dell H310 User Manual Manual pdf 78 page image

To recover a virtual disk from a degraded state, you must replace the failed physical disk and rebuild it. Once therebuilding process is complete, the virtual disk state changes from degraded to optimal. For information on rebuildingthe disk, see the topic Performing A Manual Rebuild Of An Individual Physical Disk.Memory ErrorsMemory errors can corrupt cached data, so the controllers are designed to detect and attempt to recover from thememory errors. Single-bit memory errors can be handled by the controller and do not disrupt normal operation. Anotification is sent if the number of single-bit errors exceeds a threshold value.Multi-bit errors are more serious as they result in corrupted data and data loss. The following are the actions that occurin the case of multi-bit errors:• If a multi-bit error occurs while accessing data in the cache when the controller is started with dirty cache, thecontroller discards the cache contents. The controller generates a warning message to the system console toindicate that the cache was discarded and generates an event.• If a multi-bit error occurs at run-time either in code/data or in the cache, the controller stops.• The controller logs an event to the controller’s internal event log and a message during POST is displayedindicating a multi-bit error has occurred.NOTE: In case of a multi-bit error, contact Dell Technical Support.Preserved Cache StateThe controller preserves the dirty cache from a virtual disk if the virtual disk becomes offline or is deleted because ofmissing physical disks. This preserved dirty cache is called pinned cache and is preserved until you import the virtualdisk or discard the cache.Use the BIOS Configuration Utility ( ) to select whether to import the virtual disk or discard the preservedcache. In the VD Mgmt menu, select Manage Preserved Cache and follow the steps on the screen.General IssuesPERC Card Has Yellow Bang In Device ManagerIssue: The device is displayed in Device Manager but has a yellow bang (exclamation mark).CorrectiveAction:Reinstall the driver. For more information on reinstalling drivers, see the topic DriverInstallation.PERC Card Not Seen In Device ManagerIssue: The device does not appear in the Device Manager.Correction: Turn off the system and reseat the controller.For more information see, Installing The PERC Controller.No Hard Drives Found Error Message During Microsoft Windows Server 2003 InstallationIssue: No Hard Drives Found message is displayed during a media-based installation ofMicrosoft Windows Server 2003.78