Sun Microsystems Sun Fire V440 Diagnostics And Troubleshooting Manual page 55

Device Status Reported by Sun Management Center (Continued)
TABLE 2-8
Status Meaning
Lost Comms Communications were lost between Sun Management Center and
the device in question
OK Device is operating properly with no problems detected
Stopped Device is not running
Unknown Sun Management Center cannot determine device status
How Sun Management Center Works
The Sun Management Center product comprises three software entities:
Agent layer
Server layer
Console layer
You install agent layer modules on systems to be monitored. The modules collect
system status information from log files, device trees, and platform-specific sources,
and report that data to the server component.
The server layer maintains a large database of status information for a wide range of
Sun platforms. This database is updated frequently, and includes information about
boards, tapes, power supplies, and disks, as well as operating system parameters
like load, resource usage, and disk space. You can create alarm thresholds and be
notified when these thresholds are exceeded.
The console layer presents the collected data to you in a standard format. Sun
Management Center software provides both standalone Java™ graphical user
interface (GUI) and command-line interface (CLI) applications and a Web browser-
based interface. The Java interfaces afford physical and logical views of the system
for highly intuitable monitoring.
Other Sun Management Center Features
Sun Management Center software provides you with many additional tools
including an informal tracking mechanism, an optional add-on diagnostics suite,
and a report-generation tool. In a heterogeneous computing environment, the
product can interoperate with management utilities made by other companies.
Chapter 2 Diagnostics and the Boot Process 37