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

Chapter 2: Introduction 6
For performance reasons, we recommend that these networks be isolated
from the networks used by external clients to access the cluster.
Storage Area Network (SAN). The SAN includes FibreChannel switches
and RAID subsystems. Disks in a RAID subsystem are imported into the
cluster and managed from there. After a disk is imported, you can create
PSFS filesystems on it.
Software Components
The HP Clustered File System software is installed on each server in the
cluster and includes the following major components.
PSFS
module
Distributed Lock
Manager
SANPulse
SCL
SDMP
psd and
psv
drivers
PanPulse
Kernel
components
Management
Console
Administrative
Network
mx logd
grpcommd
ClusterPulse
mx log
Processes
Other processes