Installation of a 1U rackmount server with a RAID 1 hard drives installed in a drawer system with two hot swap drawers. These drawers can be replaced without the need of a software to disconnect and reconnect the hard drives. A real hot swap. You simply have to remove one drawer and replace it with another one with the same type of hard drive. The new hard drive is automatically rebuilt and becomes mirror with the other hard drive. If the server is shut down by mistake during the process, the rebuilding restart at the same spot it was interrupted. This is an ideal way of doing a backup, rapidly and securely. If a problem happens, we stop the server, remove the two drawers and insert the last backup drawer and we restart the server. We reinsert another drawer to complete the RAID 1 and everything rebuilds with the last backup. Done in less than 5 minutes. Ideal for an internet server.