DR on I/O Boards

You must use caution when you add or remove system boards with I/O devices. Before you can remove a board with I/O devices, all of its devices must be closed and all its file systems must be unmounted.

If you need to remove a board with I/O devices from a domain temporarily and then re-add it before any other boards with I/O devices are added, reconfiguration is not necessary and need not be performed. In this case, device paths to the board devices will remain unchanged. However, if you add another board with I/O devices after the first was removed, then re-add the first board; reconfiguration is required because the paths to devices on the first board have changed.