Hi,
in Solaris, we'd do "devfsadm" (Solaris 9 onward I think) or "drvconfig+disks" (Solaris 8/older)
to detect new disks/LUNs (in our case it's NetApp SAN LUN).
Without rebooting RHEL server...
http://www.experts-exchange.com/OS/Linux/Q_23529189.html
