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2-6 SPARC Enterprise T2000 Server Service Manual • April 2007
For information about configuring and using the ALOM system controller, refer to
the latest Advanced Lights Out Manager (ALOM) CMT Guide.
2.1.4 System Reliability, Availability, and Serviceability
Reliability, availability, and serviceability (RAS) are aspects of a system’s design that
affect its ability to operate continuously and to minimize the time necessary to
service the system. Reliability refers to a system’s ability to operate continuously
without failures and to maintain data integrity. System availability refers to the
ability of a system to recover to an operational state after a failure, with minimal
impact. Serviceability relates to the time it takes to restore a system to service
following a system failure. Together, reliability, availability, and serviceability
features provide for near continuous system operation.
To deliver high levels of reliability, availability, and serviceability, the server offers
the following features:
■ Hot-pluggable hard drives
■ Redundant, hot-swappable power supplies (two)
■ Redundant hot-swappable fan units (three)
■ Environmental monitoring
■ Error detection and correction for improved data integrity
■ Easy access for most component replacements
■ Extensive POST tests that automatically delete faulty components from the
configuration
■ PSH automated run-time diagnosis capability that takes faulty components
offline.
For more information about using RAS features, refer to the SPARC Enterprise T2000
Server Administration Guide.
2.1.4.1 Hot-Pluggable and Hot-Swappable Components
The server hardware supports hot-plugging or hot-swapping of the chassis-mounted
hard drives, fans, power supplies, and the rear blower. Using the proper software
commands, you can install or remove these components while the server is running.
Hot-plug and hot-swap technologies significantly increase the server’s serviceability
and availability by providing the ability to replace hard drives, fan units, rear
blower, and power supplies without service disruption.