100 IBM Power Systems 775 for AIX and Linux HPC Solution
2.1 Power 775 diskless considerations
The service node is the only LPAR in the Power 775 frames that is diskfull. The utility,
compute, and storage nodes are diskless.
Diskless is a generic term that describes a system
that is not booted off disk. The following node states are available:
Diskfull node
For AIX systems, this node has local disk storage that is used for the operating system (a
stand-alone node). Diskfull AIX nodes often are installed by using the
NIM rte or mksysb
install
methods.
Diskless node
The operating system is not stored on local disk. For AIX systems, the file systems are
mounted from a NIM server. An AIX diskless image is essentially a SPOT, which provides
a