HP StorageWorks Fabric OS 5.3.x administrator guide (5697-0244, November 2009)

58 Performing basic configuration tasks
High availability of daemon processes
Fabric OS 5.3.0 supports automatic restart of non-critical daemons. Starting these non-critical daemons is
automatic, you cannot configure the startup process. The following sequence of events occur when a
non-critical daemon fails:
1. When a non-critical daemon fails or dies, a RASlog and AUDIT event message is logged.
2. The daemon is automatically started again.
3. If the re-start is successful, then another message is sent to RASlog and AUDIT reporting the successful
restart status.
4. Should the restart fail, another message is sent to RASlog and no further attempts are made to re-start
the daemon.
Schedule downtime and reboot the switch at your convenience. The following table lists the daemons that
are considered non-critical and are automatically restarted on failure.
Table 7 List of daemons that are automatically restarted
Daemon Description
Arrd Asynchronous Response Router (used to send management data to hosts when
the switch is accessed via the APIs (FA API or SMI-S).
Cald Common Access Layer Daemon (used by Manageability Applications).
Evmd Event Monitor Daemon (Port and Switch SCNs, firmwareDownload,
configDownload).
Raslogd Remote Access Service Log Daemon logs error detection, reporting, handling,
and presentation of data into a format consumable by management tools and
the user.
Rpcd Remote Procedure Call daemon used by the API (Fabric Access API and
SMI-S).
Snmpd Simple Network Management Protocol Daemon.
Traced Trace Daemon. Provide trace entry date/time translation to Trace Device at
startup and when date/time changed by command. Maintains the trace dump
trigger parameters in a Trace Device. Performs the trace Background Dump,
trace automatic FTP, and FTP “aliveness check” if auto-FTP is enabled.
Trackd Track Changes Daemon.
Webd Webserver daemon used for WebTools (includes httpd as well).