Dell PowerVault MD3000i User's Guide - Page 66

• Unfixable error - Data could not be read and parity or redundancy information could not be used to regenerate the data. For example, redundancy information cannot be used to reconstruct the data on a degraded virtual disk. The error is reported to the event log. Changing Media Scan Settings 1 Click the Tools tab, then click Change Media Scan Settings. 2 Select the number of days allowed for the media scan to complete in the Scan duration (days) box. NOTE: Performing the media scan frequently may negatively impact the performance of other operations. Adjust scan duration based on the performance needs of your storage array. 3 In the Select virtual disks to scan box, click the virtual disk you want to include in the media scan. NOTE: Press and click to add more than one virtual disk to the media scan. Click Select All to include all virtual disks in the media scan. 4 Check the Scan selected virtual disks checkbox to enable scanning, then choose either With consistency check or Without consistency check. Consistency check enables parity data to be checked during the media scan. 5 Click OK to accept the updated media scan settings. Suspending the Media Scan You cannot perform a media scan while performing another long-running operation on the disk drive such as reconstruction, copy-back, reconfiguration, virtual disk initialization, or immediate availability formatting. If you want to perform another long-running operation, you should suspend the media scan. NOTE: A background media scan is the lowest priority of the long-running operations. 1 Click the Tools tab, then click Change Media Scan Settings. 2 Check the Suspend media scan checkbox. 3 Click OK to suspend media scanning. 66 Disk Groups and Virtual Disks