5.5 HP StorageWorks X9720 Network Storage System Administrator Guide (AW549-96026, March 2011)

Powering file serving nodes on or off
When file serving nodes are connected to properly configured power sources, the nodes can be
powered on or off or can be reset remotely. To prevent interruption of service, set up standbys for the
nodes (see “Identifying standbys for file serving nodes” on page 33), and then manually fail them
over before powering them off (see “Manually failing over a file serving node” on page 36). Remotely
powering off a file serving node does not trigger failover.
To power on, power off, or reset a file serving node, use the following command:
<installdirectory>/bin/ibrix_server -P {on|reset|off} -h HOSTNAME
Starting and stopping processes
You can start, stop, and restart processes and can display status for the processes that perform internal
X9000 Software functions. The following commands also control the operation of PostgreSQL on the
machine. The PostgreSQL service is available at /usr/local/ibrix/init/.
To start and stop processes and view process status on the management console, use the following
command:
/etc/init.d/ibrix_fusionmanager [start | stop | restart | status]
To start and stop processes and view process status on a file serving node, use the following command.
In certain situations, a follow-up action is required after stopping, starting, or restarting a file serving
node.
/etc/init.d/ibrix_server [start | stop | restart | status]
To start and stop processes and view process status on an X9000 client, use the following command:
/etc/init.d/ibrix_client [start | stop | restart | status]
Tuning file serving nodes and X9000 clients
The default host tuning settings are adequate for most cluster environments. However, HP Support
may recommend that you change certain file serving node or X9000 client tuning settings to improve
performance.
Host tuning changes are executed immediately for file serving nodes. For X9000 clients, a tuning
intention is stored in the management console. When X9000 Software services start on a client, the
client queries the management console for the host tunings that it should use and then implements
them. If X9000 Software services are already running on a client, you can force the client to query
the management console by executing ibrix_client or ibrix_lwhost --a on the client, or by
rebooting the client.
You can locally override host tunings that have been set on clients by executing the ibrix_lwhost
command.
All management console commands for tuning hosts include the -h HOSTLIST option, which supplies
one or more hostgroups. Setting host tunings on a hostgroup is a convenient way to tune a set of
clients all at once. To set the same host tunings on all clients, specify the clients hostgroup.
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