Reliable Scalable Cluster Technology (Rsct); Gpfs - IBM Power Systems 775 Manual

1.9.5 Reliable Scalable Cluster Technology
Reliable Scalable Cluster Technology (RSCT) is a set of software components that provide a
comprehensive clustering environment for AIX, Linux, Solaris, and Windows. RSCT is the
infrastructure that is used by various of IBM products to provide clusters with improved
system availability, scalability, and ease of use.
RSCT includes the following components:
Resource monitoring and control (RMC) subsystem
This subsystem is the scalable, reliable backbone of RSCT. RMC runs on a single
machine or on each node (operating system image) of a cluster and provides a common
abstraction for the resources of the individual system or the cluster of nodes. You use
RMC for single system monitoring or for monitoring nodes in a cluster. However, in a
cluster, RMC provides global access to subsystems and resources throughout the cluster,
thus providing a single monitoring and management infrastructure for clusters.
RSCT core resource managers
A resource manager is a software layer between a resource (a hardware or software entity
that provides services to some other component) and RMC. A resource manager maps
programmatic abstractions in RMC into the actual calls and commands of a resource.
RSCT cluster security services
This RSCT component provides the security infrastructure that enables RSCT
components to authenticate the identity of other parties.
Topology services subsystem
This RSCT component provides node and network failure detection on some cluster
configurations.
Group services subsystem
This RSCT component provides cross-node/process coordination on some cluster
configurations.
For more information, see this website:
http://publib.boulder.ibm.com/infocenter/clresctr/vxrx/topic/com.ibm.cluster.re
lated_libraries.doc/related.htm?path=3_6#rsct_link

1.9.6 GPFS

The IBM General Parallel File System (GPFS) is distributed, high-performance, massively
scalable enterprise file system solution that addresses the most challenging demands in
high-performance computing.
GPFS provides online storage management, scalable access, and integrated information
lifecycle management tools capable of managing petabytes of data and billions of files.
Virtualizing your file storage space and allowing multiple systems and applications to share
common pools of storage provides you the flexibility to transparently administer the
infrastructure without disrupting applications. This configuration improves cost and energy
efficiency and reduces management overhead.
Massive namespace support, seamless capacity and performance scaling, and proven
reliability features and flexible architecture of GPFS helps your company foster innovation by
simplifying your environment and streamlining data work flows for increased efficiency.
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IBM Power Systems 775 for AIX and Linux HPC Solution