A viable core cell should be connected to an I/O chassis that connects to a boot
disk or other method of installing or recovering the operating system (such as a
CD-ROM or DVD-ROM drive, network connection to an install server, or tape
drive). This allows the nPartition to boot or recover the OS, even if only the
nPartition's core cell is functioning.
On servers based on the HP sx2000 chipset, core I/O is provided on each cell, so every cell is a
viable core cell. On all other nPartition servers, a cell is a viable
core cell only if it is attached to an I/O chassis
with core I/O.