IBM eServer Cluster 1600 Managed by PSSP 3.5: What's New

102 IBM ^ Cluster 1600 Managed by PSSP 3.5: What’s New

System for AIX 5L: AIX Clusters Concepts, Planning, and Installation

Guide

, GA22-7895.

– The software can be installed in either an AIX cluster environment or a

PSSP cluster environment. Therefore, two sets of man pages are shipped

with the product and your MANPATH environment variable should point to

the appropriate directory.

5.1.2 General Parallel File System cluster types

GPFS defines several cluster types, depending on the operating environment:

VSD environment The VSD/SP environment is based on the IBM Parallel

System Support Programs (PSSP) product and the IBM

Virtual Shared Disk (VSD) product. The boundaries of the

GPFS cluster in the VSD environment depend on the

switch type being used. For more information, refer to 5.3,

“General Parallel File System on Virtual Shared Disk” on

page 104.

HACMP environment The HACMP environment is created by the High

Availability Cluster Multi-Processing for AIX/Enhanced

Scalability (HACMP/ES). The boundaries of the GPFS

cluster are maintained with the

mmcrcluster,

mmaddcluster, and mmdelcluster commands. 5.4,

“General Parallel File System on HACMP” on page 108,

specifies the HACMP environment.

Linux environment The Linux environment is based on the Linux operating

system. The boundaries of the GPFS cluster in the Linux

environment are maintained with the

mmcrcluster,

mmaddcluster, and mmdelcluster commands. For more

information, refer to 5.5, “General Parallel File System on

Linux” on page 112.

RPD environment A Reliable Scalable Cluster Technology (RSCT) peer

domain was created by the RSCT subsystem of AIX 5L. In

the RPD environment, the boundaries of the GPFS

cluster are maintained with the

mmcrcluster,

mmaddcluster, and mmdelcluster commands. For more

information, refer to 5.6, “General Parallel File System on

RSCT peer domain” on page 114.

Important: GPFS includes new file system functions that are not usable in

existing file systems until you authorize these changes by issuing

mmchfs -V.