Storage Array Media Scan - Dell PowerVault MD3000i User Manual

On the target storage array:
1 Insert the exported physical disks into the available physical disk slots.
2 Review the Import Report for an overview of the disk group that you are
importing.
3 Check for non-importable components.
4 Confirm that you want to proceed with the import procedure.
NOTE:
Some settings cannot be imported during the import disk group procedure.
The following settings are removed/cleared during the procedure:
• Persistent reservations
• Host-to-virtual disk mappings
• Virtual disk copy pairs
• Snapshot virtual disks and snapshot repository virtual disks
• Remote mirror pairs
• Mirror repositories

Storage Array Media Scan

The media scan is a long-running operation that examines virtual disks to
verify that data is accessible. The process finds media errors before normal
read and write activity is disrupted and reports errors to the event log.
Errors discovered by the media scan include:
• Unrecovered media error — Data could not be read on the first attempt or
on any subsequent attempts. For virtual disks with redundancy protection,
data is reconstructed, rewritten to the physical disk, and verified and the
error is reported to the event log. For virtual disks without redundancy
protection (RAID 1, RAID 5, and RAID 6 virtual disks), the error is not
corrected but is reported to the event log.
• Recovered media error — Data could not be read by the physical disk on
the first attempt but was successfully read on a subsequent attempt. Data
is rewritten to the physical disk and verified and the error is reported to the
event log.
• Redundancy mismatches error — The first 10 redundancy mismatches
that are found on the virtual disk are reported to the event log.
Disk Groups and Virtual Disks
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