Your Windows 2000 Server computer contains a stripe set with parity on a four-disk array. You convert the stripe set with parity to a dynamic RAID-5 volume. Six months later, users report that disk access on the server is slower than it had been on the previous day. You use Disk Management and discover that the status of the third disk in the array is missing. You want to recover the failed RAID-5 volume. What should you do first?