HP TruCluster Server V5.1B-1 Specification Download Page 4

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Performance Management

Performance Management The performance management capability of Tru64 UNIX has been modified from one large performance management tool

(

pmgr

) to several smaller and more versatile tools. The performance management tool suite consists of collect, collgui, and

two Simple Network Management Protocol (SNMP) agents (pmgrd and clu_mibs).

The collect tool gathers operating system and process data under Tru64 UNIX Versions 4.x and 5.x. Any subset of the
'subsystems' (Process, Memory, Disk, LSM Volumes, Network, CPU, Filesystems) and Header can be defined for which data is
to be collected. Collect is designed for high reliability and low system-resource overhead. Accompanying collect are two
highly integrated tools: collgui (a graphical front-end) and cfilt, (which allows completely arbitrary extraction of data from
the output of collect to standard output). Collgui is a laborsaving tool that allows a user to quickly analyze collect data.
The Performance Manager metrics server (

pmgrd

) is a UNIX daemon process that provides general UNIX performance

metrics on request. The

pmgrd

metrics server supports the extensible SNMP agent mechanism (eSNMP).

Cluster MIB

TruCluster Server supports the HP Common Cluster MIB. HP Insight Manager uses this Cluster MIB to discover cluster
member relationships, and to provide a coherent view of clustered systems across supported platforms.

Highly Available NFS

Highly Available NFS
Server

Server

When configured as an NFS server, a TruCluster Server cluster can provide highly available access to the file systems it
exports. No special cluster management operations are required to configure the cluster as a highly available NFS server. In
the event of a system failure, another cluster member will become the NFS server for the file system, transparent to external
NFS clients. NFS file locking is supported, as are both NFS V2 and V3 with UDP and TCP.

TruCluster Server allows NFS file systems to be served from the cluster through both the default cluster alias and alternate
aliases. Alternate cluster aliases can be defined to limit NFS server activity to those members that are actually connected to
the storage that contains the exported file systems. NFS clients can use this alternate alias when they mount the file systems
served by the cluster.

Fast File System Recovery

The Advanced File System (AdvFS) log-based file system provides higher availability and greater flexibility than traditional
UNIX file systems. AdvFS journaling protects file system integrity. TruCluster Server supports AdvFS for both read and write
access.

An optional, separately licensed product, the Advanced File System Utilities, performs online file system management
functions. See the OPTIONAL SOFTWARE section of this document for more information on the AdvFS utilities.

Increased Data Integrity

Tru64 UNIX Logical Storage Manager (LSM) is a cluster-integrated, host-based solution to data storage management. In a
TruCluster Server cluster, LSM operations continue despite the loss of cluster members, as long as the cluster itself continues
operation and a physical path to the storage is available. LSM disk groups can be used simultaneously by all cluster
members and the LSM configuration can be managed from any cluster member.

Basic LSM functionality, including disk spanning and concatenation, is provided with the Tru64 UNIX operating system.
Extended functions, such as striping (RAID 0), mirroring (RAID 1), and online management, are available with a separate
license. Mirroring of LSM is RAID Advisory Board (RAB) certified for RAID Levels 0 and 1.

LSM is supported for use in a TruCluster Server cluster and will support any volume in a cluster, including swap and cluster
root and excluding the quorum disk and member boot disks. Hardware mirroring is supported for all volumes in a cluster
without exception.

LSM RAID 5 volumes are not supported in clusters. See the OPTIONAL SOFTWARE section of this document for more
information on LSM.

Global Error Logger &

Global Error Logger &
Event Manager

Event Manager

TruCluster Server can log messages about events that occur in the TruCluster environment to one or more systems. Cluster
administrators can also receive notification through electronic mail when critical problems occur.

QuickSpecs

HP TruCluster Server V5.1B-1

Features - TruCluster Server V5.1B-1

DA - 11444 Worldwide — Version 4 — December 8, 2003

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