Dell UCSA-901 manual Degraded state of virtual disks, Invalid SAS topology detected error message

Page 103

If you insert a physical disk that was previously a member of a virtual disk in the system, and that disk’s previous location has been taken by a replacement disk through a rebuild, you must manually remove the foreign configuration flag of the newly inserted disk.

Previous configuration cleared or missing error message

Error Message:	Previous configuration(s) cleared or missing. Importing
	configuration created on XX/XX XX.XX. Press any key to
	continue, or ’C’ to load the configuration utility.
Probable	The message indicates that the controller and physical disks have different
Cause:	configurations.
Corrective	You can use the BIOS Configuration Utility (<Ctrl> <R>) to clear the foreign
Action:	configuration.

Invalid SAS topology detected error message

Error Message:	Invalid SAS topology detected. Please check your cable
	configurations, repair the problem, and restart your system.
Probable	The SAS cables for your system are improperly connected.
Cause:
Corrective	Check the cable connections and fix problems if any. Restart the system.
Action:

Configured disks removed or not accessible error message

Error Message:	Some configured disks have been removed from your system or are
	no longer accessible. Check your cables and ensure all disks
	are present. Press any key or ’C’ to continue.
Probable	The message indicates that some configured disks were removed. If the disks were
Cause:	not removed, they are no longer accessible. The SAS cables for your system might
	be improperly connected.
Corrective	Check the cable connections and fix issues if any. Restart the system. If there are
Action:	no cable problems, press any key or <C> to continue.

Degraded state of virtual disks

A redundant virtual disk is in a degraded state when one or more physical disks have failed or are inaccessible. For example, if a RAID 1 virtual disk consists of two physical disks and one of them fails or become inaccessible, the virtual disk become degraded.

To recover a virtual disk from a degraded state, you must replace the failed physical disk and rebuild it. Once the rebuilding process is complete, the virtual disk state changes from degraded to optimal. For information on rebuilding the disk, see Performing A Manual Rebuild Of An Individual Physical Disk.

103

Image 103

Contents Dell PowerEdge RAID Controller Perc 9 User’s Guide Page Contents Deploying the Perc card Driver installationBios Configuration Utility Security key and RAID management UEFI/HII RAID configuration utility100 Getting help Appendix RAID descriptionOverview Features of Perc H330 adapter cardFeatures of Perc H330 mini monolithic card Features of Perc H730 card Features of Perc H730/H730P mini monolithic card Features of Perc H730P adapter card Supported operating systems Features of Perc H830 adapter cardPerc H330 Perc H730 Perc H730P Perc H830 Perc card specificationsSAS Comprehensive embedded management Management applications for Perc cardsDell OpenManage Storage Management Related documentation Creating Global Hot Spares Creating Security Key Getting started with your Perc cardCreating Global Hot Spares Creating Security Key Creating virtual disks Setting up virtual disks Manage physical disks Creating Global Hot Spares Creating Security Key Page Enabling T10 PI FeaturesPerc 9 personality management T10 protection information4KB block size disk drives Secure firmware updateImproved RAID 10 configuration Physical disk power managementTypes of virtual disk initialization Configured spin down delayFull initialization Consistency checks Background initializationFast initialization FastPath Using disk roamingConfiguring FastPath-capable virtual disks Disk roamingMigrating virtual disks Virtual disk migrationVirtual disk read cache policies Virtual disk write cache policiesConditions under which write-back is employed Reconfiguration of virtual disks Or more Yes Removes Redundancy While increasing Capacity Smart Feature Fault tolerancePatrol Read Using persistent hot spare slotsPhysical disk failure detection Physical disk hot swapping Using replace member and revertible hot sparesController cache preservation Non-RAID disks support Battery Transparent Learn CycleSelect OK Removing the Perc 9 adapter Deploying the Perc cardBattery cable connector Perc 9 card SAS cables Removing the Perc 9 mini monolithic controller Installing the Perc 9 adapterRemoving and installing the Perc 9 mini monolithic card Replacing the battery of a H730P mini monolithic cardRemoving the battery carrier Removing the battery Installing the Perc 9 mini monolithic controllerRemoving a H730P slim card Removing and installing a H730P slim card Replacing the battery of a H730P slim cardRemoving the battery Removing the Perc 9 mini blade controller Installing a H730P slim cardRemoving and installing the Perc 9 mini blade controller Replacing the tethered battery of a Perc 9 mini blade cardRemoving the battery carrier Removing the battery from the battery carrier Installing the battery into the battery carrier Replacing the battery carrier Installing the Perc 9 mini blade controllerRemoving the Perc FD33xD Card Removing and installing the Perc FD33xD card Replacing the battery of a Perc FD33xD cardInstalling the Perc FD33xD card Page Creating the device driver media Driver installationDownloading drivers from the Dell support website Windows driver installation Linux driver installation Page Entering the Bios Configuration Utility Bios Configuration UtilityExiting the Configuration Utility Menu navigation controls For more information, see Managing dedicated hot spares Setting up virtual disksParameters description Virtual disk management Bios Configuration Utility menu optionsPage Virtual disk actions Physical disk actions Physical disk management PD MgmtController management Ctrl Mgmt RebuildController management actions Virtual Disk Management Foreign configuration viewCreating virtual disks Initializing virtual disks Selecting virtual disk parametersRunning a data consistency check Checking data consistencyPage Break mirror Managing preserved cache Break mirror in Bios configuration utilityDeleting virtual disks Managing dedicated hot sparesDeleting disk groups Clearing the configurationSetting LED blinking Physical Disk ManagementRemoving global or dedicated hot spares Creating global hot sparesReplacing an online physical disk Stopping background initialization Restrictions and limitationsPerforming a manual rebuild of an individual physical disk Enabling boot support for a BIOS-enabled controller Enabling boot supportController Management Disabling auto import Enabling Bios stop on errorDisabling Bios stop on error Enabling auto importRestoring factory default settings Navigating to Dell Perc 9 configuration utility UEFI/HII RAID configuration utilityEntering the Uefi configuration utility Exiting the Uefi configuration utilityConfiguration management Viewing disk group properties Creating profile based virtual disksConverting physical disks to RAID capable disk Converting physical disks to non-RAID diskSaving controller events Managing foreign configurations on a RAID controllerDeleting existing configurations on a RAID controller Restoring factory settings for the controllerEnabling security for the controller Switching the controller to HBA modeSaving debug log Viewing virtual disk properties Switching the controller to RAID modeViewing physical disks associated with a virtual disk Hardware components management Viewing battery propertiesViewing physical disk properties Viewing physical disks associated with an enclosure Security key and RAID management Security key management in the Bios configuration utilitySecurity key implementation Creating a security key Local Key Management LKMChanging the security key Creating secured virtual disks Deleting a security keySecuring pre-existing virtual disks Page Instant secure erase Extra enclosure error message TroubleshootingBios configuration utility error messages Discovery error messageMissing virtual disks error message Previous configuration of disks removed error messageDirty cache data error message Drive Configuration Changes Error Message Bios disabled error messageAdapter at baseport not responding error message Virtual disks degraded error message Virtual disks offline error messageVirtual disks partially degraded error message Foreign configuration not found in ctrl R error message Memory or battery problem error messageFirmware fault state error message Foreign configuration found error messageDegraded state of virtual disks Previous configuration cleared or missing error messageInvalid SAS topology detected error message Configured disks removed or not accessible error messagePreserved Cache State Memory errorsSecurity key errors Secured foreign import errorsPhysical disk issues General IssuesPhysical disk displayed as blocked Unable to rebuild a fault tolerant virtual diskFatal error or data corruption reported Multiple disks become inaccessiblePhysical disk takes a long time to rebuild Virtual disk fails during rebuild using a global hot spareVirtual disk fails rebuild using a dedicated hot spare Rebuilding a failed physical diskReplace member errors Smart errorsGeneral disk fails Linux operating system errorsSource disk fails during replace member operation Target disk failsUnhealthy Status of the Drivers Disk Carrier LED IndicatorsUefi error messages Unable to register Scsi device error messageCorrective Action Disk striping Appendix RAID descriptionSummary of RAID levels RAID terminologySpanned RAID levels Disk mirroringExample of Distributed Parity RAID Parity dataDocumentation feedback Locating your system Service TagGetting help Contacting Dell