2123Server AdministratorRedundancy lost: Virtual Disk 0 (Virtual Disk 0) Controller 0 (PERC 5/i Integrated)A virtual disk, that relies on all disks in an underlying redundant RAID (e.g. RAID 1, RAID 5, ...) to be online (working) lost its redundancy.This is usually happens when one disk in the RAID array failed and needs to be replaced.