The system administrator plans to migrate a RAID 1 volume to RAID 5. What is required to migrate the volume successfully?

RAID 5 requires a minimum of three drives to distribute parity data across the array, while RAID 1 uses only two drives. To migrate successfully, the administrator must have at least one additional drive with sufficient unused space available to expand the array and accommodate the new RAID 5 stripe-with-parity layout.

RAID 5 requires a minimum of three drives, not five; five drives would be required for RAID 6 with double parity or certain other configurations, but not for a basic RAID 5 migration.

HP ORCA is a specific HP server utility for configuring arrays during boot and is not a universal or mandatory requirement for migrating a RAID volume across all platforms and controllers.

A minimum of 2 GB RAID cache memory is not a defined universal requirement for a RAID 1 to RAID 5 migration and is a controller-specific optional performance feature.