Sun Microsystems V490 manual Summary of Diagnostic Tools

TABLE 6-1	Summary of Diagnostic Tools	(Continued)
			Remote
Diagnostic Tool Type	What It Does	Accessibility and Availability	Capability

SC card	Hardware	Monitors environmental
and RSC	and	conditions, performs basic fault
software	software	isolation, and provides remote
		console access
Sun	Software	Monitors both hardware
Management		environmental conditions and
Center		software performance of multiple
		machines. Generates alerts for
		various conditions
Hardware	Software	Exercises an operational system
Diagnostic		by running sequential tests. Also
Suite		reports failed FRUs

Can function on standby	Designed for
power and without	remote
operating system	access
Requires operating system	Designed for
to be running on both	remote
monitored and master	access
servers. Requires a
dedicated database on the
master server
Separately purchased	Designed for
optional add-on to Sun	remote
Management Center.	access
Requires operating system
and Sun Management
Center

Why are there so many different diagnostic tools?

There are a number of reasons for the lack of a single all-in-one diagnostic test, starting with the complexity of the server systems.

Consider the data bus built into every Sun Fire V490 server. This bus features a five- way switch called a CDX that interconnects all processors and high-speed I/O interfaces (see FIGURE 6-1). This data switch enables multiple simultaneous transfers over its private data paths. This sophisticated high-speed interconnect represents just one facet of the Sun Fire V490 server’s advanced architecture.

Chapter 6 Diagnostic Tools 75