CMMVC6623E The command cannot be initiated because the drive validation test has timed out.
Explanation
When a drive is made a candidate, the new drive is validated to ensure that adding it to the configuration will not adversely affect the existing or future array status. The test timed out, which caused the validation to fail.
User response
Fix any errors that are associated with the specified drive, or specify a different drive, and resubmit the command.