HyperFabric Configuration Guidelines

TCP/UDP/IP

entire HyperFabric subsystem. The monitor can inform the user if

the resource being monitored is UP or DOWN. The administrator

defines the condition to trigger a notification (usually a change in

interface status). Notification can be accomplished with one of the

following:

— A Simple Network Management Protocol (SNMP) trap

— Logging into a user specified log file with a choice of severity

— Email to a user defined email address.

For more detailed information on EMS, including instructions for

implementing this feature, see the EMS Hardware Monitors User’s

Guide Part Number B6191-90028 September 2001 Edition.

• ServiceGuard (earlier referred to as MC/ServiceGuard): Supported

Within a cluster, ServiceGuard groups application services

(individual HP-UX processes) into packages. In the event of a single

service failure (node, network, or other resource), EMS provides

notification and ServiceGuard transfers control of the package to

another node in the cluster, allowing services to remain available

with minimal interruption.

ServiceGuard via EMS, directly monitors cluster nodes, LAN

interfaces, and services (the individual processes within an

application). ServiceGuard uses a heartbeat LAN to monitor the

nodes in a cluster. ServiceGuard cannot use the HyperFabric

interconnect as a heartbeat LAN. Instead, use a separate LAN for

the heartbeat.

For more detailed information on configuring ServiceGuard, see

HyperFabric Administrator’s Guide Part Number B6257-90039,

Installing and Administering HyperFabric Part Number

B6257-90030 Edition E0601 and Managing MC/ServiceGuard Part

Number B3936-90065 March 2002 Edition.

• High Availability (HA): Supported

To create a highly available HyperFabric cluster, there should not be

any single point of failure. Once the HP 9000 nodes and the

HyperFabric hardware have been configured with no single point of

failure, ServiceGuard and EMS can be configured to monitor and fail

over nodes and services using ServiceGuard packages.