Starting from Storage Foundation 6.0.1, one of feature that was introduced is Dynamic Reconfiguration tool.
From my point of view, this feature is extremely useful because avoiding any kind of service interruption.
Dynamic Multi-Pathing provides a Dynamic Reconfiguration tool. The Dynamic Reconfiguration tool is an interactive tool to automate dynamic reconfiguration of LUNs or HBAs. Dynamic reconfiguration includes addition, removal or replacement of LUNs, and replacement of certain HBAs, without requiring a reboot. The Dynamic Reconfiguration tool simplifies the process, so that you do not need a complex set of DMP and operating system related commands. System administrators and storage administrators may need to modify the set of LUNs provisioned to a server. You can change the LUN configuration dynamically, without performing a reconfiguration reboot on the host.
The operations are as follows:
For using the Dynamic Reconfiguration tool is sufficient to start the vxdiskadm utility as showed in the pictures below:
From more details, you can consult the following documents for Aix, Linux, HP-UX and Solaris, starting from the version 6.0.1 of Storage Foundation (SF):