Hpacucli is the a command line Array Configuration Utility program for Smart Array Controllers and RAID Array Controllers. The command can be installed in one of two ways; either by standalone rpm, or as part of the Proliant Support Pack. The utility is useful as it allows you to create and delete raid configs without having to reboot. First run the hpacucli command to start the utility. Once the utility is started run the command below to show your arrays and disks.