Most of real time application runs 24 / 7 . Hence no need to power off machine in case of new hardware adding like RAM , Hard disk . Hot plug-able devices
solaris 10 use following command
devfsadm ---------- command to reconfigure new attached devices.
devfsadm -C command to write new changes in library files ..
most of the hardware files associated with
bash > etc/path_to_instance
contains all hardware devices with Instances names..