HP StorageWorks Clustered File System 3.2.1 Windows Storage Server Edition Administration Guide (February 2006)

Chapter 2: Introduction 7
HP CFS Management Console. Provides a graphical interface for
configuring an HP Clustered File System cluster and monitoring its
operation. The console can be run either remotely or from any server in
the cluster.
ClusterPulse process. Monitors the cluster, controls failover of virtual
hosts and devices, handles communications with the HP CFS
Management Console, and manages device monitors, service monitors,
and event notification.
Distributed Lock Manager (DLM) process. Provides a locking
mechanism to coordinate server access to shared resources in the cluster.
All reads and writes to a PSFS filesystem automatically obtain the
appropriate locks from the DLM, ensuring filesystem coherency.
SDMP process. Arbitrates and ensures that only one cluster has access to
shared SAN devices, in the event that a server loses connectivity.
SANPulse process. Provides the cluster infrastructure for management
of the SAN. SANPulse coordinates filesystem mounts, unmounts, and
crash recovery operations.
PSFS filesystem module. The shared filesystem.
SCL process. Manages shared storage devices. The SCL has two primary
responsibilities: assigning device names to shared disks when they are
imported into the cluster, and enabling or disabling a server’s access to
shared storage devices.
psd driver. Provides cluster-wide consistent device names among all
servers.
psv driver. Used by the CFS Volume Manager, which creates, extends,
recreates, or destroys dynamic volumes.
PanPulse process. Selects and monitors the network to be used for the
administrative network, verifies that all hosts in the cluster can
communicate with each other, and detects any communication problems.
mxlogd process. Manages global error and event messages. The
messages are written to the HP Clustered File System event log on each
server.