HP StorageWorks Fabric OS 5.X Diagnostics and System Error Messages Reference Guide (AA-RVHZB-TE, September 2005)

90 Introduction to System Messages
EM The environmental monitor (EM) manages and monitors the various FRUs
(field replaceable units), including the port cards, CP blades, blower
assemblies, power supplies, and WWN (World Wide Name) cards. EM
controls the state of the FRUs during system startup, hot-plug sequences, and
fault recovery.
EM provides access to and monitors the sensor and status data from the
FRUs and maintains the integrity of the system using the environmental and
power policies. EM reflects system status by way of telnet commands, system
LEDs, and status and alarm messages. EM also manages some
component-related data.
EVMD This is the event management module.
FABR FABRIC refers to a network of Fibre Channel switches. The FABRIC error
messages come from the fabric daemon. The fabric daemon follows the
FC-SW-3 standard for the fabric initialization process, such as determining
the E_Ports, assigning unique domain IDs to switches, creating a spanning
tree, throttling the trunking process, and distributing the domain and alias
lists to all switches in the fabric.
FABS Fabric OS system driver module.
FCMC Fibre Channel miscellaneous messages relate to problems with the physical
layer used to send Fibre Channel traffic to and from the switch.
FCPD The Fibre Channel Protocol daemon is responsible for probing the devices
attached to the loop port. Probing is a process the switch uses to find the
devices attached to the loop ports and to update the Name Server with the
information.
FCPH Fibre Channel Physical Layer is used to send Fibre Channel traffic to and
from the switch.
FICU The FICON-CUP daemon handles communication with FICON on IBM
FICON storage devices. Errors to this module are usually initiation errors or
indications that FICON-CUP prerequisites have not been met, such as a
license key, core PID, and secure mode on the fabric.
FKLB Fabric OS I/O kernel library module.
FLOD FLOOD is a part of the FSPF (fabric shortest path first) protocol that handles
synchronization of the link state database (LSDB) and propagation of the
link state records (LSR).
FSPF Fabric shortest path first (FSPF) is a link state routing protocol that is used to
determine how frames should be routed. These messages are about protocol
errors.
FSS The Fabric OS state synchronization framework provides facilities by which
the active control processor (CP) can synchronize with the standby CP,
enabling the standby CP to take control of the switch nondisruptively during
failures and software upgrades. These facilities include version negotiation,
state information transfer, and internal synchronization functions, enabling
the transition from standby to active operation.
FSS is defined both as a component and a service. A component is a
module in the Fabric OS, implementing a related set of functionality. A
service is a collection of components grouped together to achieve a
modular software architecture.
Table 4 System module descriptions (continued)
System
module
Description