System Monitoring And Control; Ibm Virtual Shared Disk (Vsd); Security - IBM RS/6000 SP Handbook

9.1.3 System monitoring and control

PSSP provides system management tools that enable the system
administrator to manage the SP system. PSSP allows authorized users to
monitor and manipulate SP hardware variables at node or frame levels. It
also enables the system administrator to gracefully shut down rather than
rebooting the nodes or the complete system. In addition, it provides for
consolidation of error and status logs for expediting problem determination.

9.1.4 IBM Virtual Shared Disk (VSD)

The IBM Virtual Shared Disk (IBM VSD) allows multiple nodes to access a
disk as if the disk were attached locally to each node. This feature can
enhance the performance of applications that provide concurrent control for
data integrity, such as Oracle databases or the GPFS file system.
IBM Recoverable Virtual Shared Disk (RVSD)
The IBM Recoverable Virtual Shared Disk (IBM RVSD) allows transparent
recovery of IBM VSD. The IBM RVSD function provides recovery from failures of
IBM VSD server nodes and takes advantage of the availability services provided
by PSSP to determine which nodes are up and operational.
Hashed Shared Disk
This component that works with the IBM Virtual Shared Disk component to offer
data striping for your virtual shared disks.

9.1.5 Security

PSSP 3.2 offers three security settings, which can be used in various
combinations: You can use all three of them at the same time, or you can use a
combination of any two, or you could choose just one setting to use.
Security configurations:
Standard authentication
Kerberos Version 4
Distributed Computing Environment (DCE)
264 RS/6000 SP and Clustered IBM ^ pSeries Systems Handbook