HP Systems Insight Manager 5.2 Update 2 Technical Reference Guide

Appliance, HSG Element Manager reduces the job of storage management to simple point-and-click,
across the switched Fibre Channel SAN. It provides for easy configuration of HP StorageWorks
HSG80/60 storage systems as well as field replaceable unit (FRU) level fault detection and notification,
through an SNMP agent with MIB event logging. This new version introduces a provider for the Storage
Networking Industry Association Storage Management Initiative Specification (SMI-S), enabling greater
multivendor manageability in the enterprise network storage infrastructure.
HP OpenView Storage Management Appliance is available through HP Systems Insight Manager (HP SIM)
from the Tools & Links tab on the System Page. See “Tools & Links tab” for information about accessing
the System Page.
See http://h18006.www1.hp.com/products/sanworks/managementappliance/index.html for more
information and access to documentation.
HP Process Resource Manager overview
HP Process Resource Manager (PRM) enables the system administrator to focus the appropriate amount of
system resources exactly where you need them. This powerful resource management tool runs as in addition
to HP-UX. When PRM is enabled, groups of users or applications are guaranteed a specified portion of the
total system central processing unit (CPU) processing cycles, of the available real memory resources, and of
the disk bandwidth to logical volume-managed (LVM) systems.
PRM is a resource management tool used to control the amount of resources that processes use during peak
system load (at 100% CPU, 100% memory, or 100% disk bandwidth utilization). PRM can guarantee a
minimum allocation of system resources available to a group of processes through the use of PRM groups.
A PRM group is a collection of users and applications that are joined together and assigned certain amounts
of CPU, memory, and disk bandwidth. The two types of PRM groups are FSS PRM groups and PSET PRM
groups. An FSS PRM group is the traditional PRM group, whose CPU entitlement is specified in shares. This
group uses the Fair Share Scheduler (FSS) in the HP-UX kernel within the system's default processor set (PSET).
A PSET PRM group is a PRM group whose CPU entitlement is specified by assigning it a subset of the system's
processors (PSET). Processes in a PSET have equal access to CPU cycles on their assigned CPUs through the
HP-UX standard scheduler.
Reasons to use PRM
• Improve the response time for critical users and applications.
• Set and manage user expectations for performance.
• Allocate shared servers based on budgeting.
• Ensure that an application package in a Serviceguard cluster has sufficient resources on an active
standby system in the event of a failover.
• Ensure that critical users or applications have sufficient CPU, memory, and disk bandwidth resources.
Users who at times run critical applications might at other times engage in relatively trivial tasks. These
trivial tasks can compete in the users' PRM group with critical applications for available CPU and real
memory. For this reason, it is often useful to separate applications into different PRM groups or create
alternate groups for a user. You can assign a critical application its own PRM group to ensure that the
application gets the needed share of resources.
• Restrict the CPU, real memory, and disk bandwidth resources available to relatively low-priority users
and applications during times of heavy demand.
For example, mail readers can consume significant disk bandwidth when users first come into work or
return from lunch. Therefore, you might want to assign a mail application to a PRM group with small
resource allocations and restrict the amount of resources mail can use during such times of heavy
demand on the system.
• Monitor resource consumption by users or applications.
Assigning a group of users or applications to separate PRM groups can be a good way to keep track
of the resources they are using.
HP Integrity Essentials overview 489