HP StorageWorks Clustered File System 3.6.1 Windows Storage Server Edition administration guide (AG515 - 96007, August 2008)

Chapter 3: Introduction to HP Clustered File System 9
The cluster includes these components:
Servers. Each server must be running HP Clustered File System.
Public LANs. A cluster can include up to four network interfaces per
server. Each network interface can be configured to support multiple
virtual hosts, which provide failover protection for Web, e-mail, file
transfer, and other TCP/IP-based applications.
Administrative Network. HP Clustered File System components
communicate with each other over a common LAN. The network used for
this traffic is called the administrative network. When you configure the
cluster, you can specify the networks that you prefer to use for the
administrative network traffic. 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 (or a network switch and iSCSI arrays). Disks 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. It includes kernel modules such as the PSFS filesystem, as well as
several processes and drivers.
HP Clustered File System also includes a Management Console that
provides a graphical interface for configuring the cluster and monitoring
its operation. The console can be run either remotely or from any server
in the cluster.
Following are some of the processes provided with HP Clustered File
System:
ClusterPulse. Monitors the cluster, controls failover of virtual hosts and
devices, handles communications with theHP CFS Management Console,
and manages device monitors, service monitors, and event notification.
Distributed Lock Manager (DLM). Provides a locking mechanism to
coordinate server access to shared resources in the cluster. All reads and