We are performing hardware tests with 4 * 18.2GB disks in a Raid 5 configuration. One of the tests involves removing a Physical disk from the Raid to prove the system will still run with 1 disk failure. But what do you have to do once the disk is inserted back into the array. We have a CR3500 Array controller card. The same test will be performed on another Proliant Server with 2 * 18.2 GB disks in a Raid 1 configuration, will this be the same as building the Raid 5 disks?. Any help will be appreciated.