FUJITSU T2000 - Manual (Page 25)

SPARC Enterprise T2000 Server Features 9
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 SPARC
Enterprise T2000 server offers the following features:
■ Hot-swappable hard drives
■ Redundant, hot-swappable power supplies (two)
■ Redundant hot-swappable fan units (three) and one blower unit
■ Environmental monitoring
■ Internal hardware drive mirroring (RAID 1)
■ Error detection and correction for improved data integrity
■ Easy access for most component replacements
For more information about using RAS features, refer to the SPARC Enterprise T2000
Server Administration Guide.
Hot-Swappable Components
SPARC Enterprise T2000 server hardware is designed to support hot-swapping of
the chassis-mounted hard drives, fan units, and power supplies. By using the proper
software commands, you can install or remove these components while the system is
running. Hot-swap technology significantly increases the system’s serviceability and
availability by providing the ability to replace hard drives, fan units, and power
supplies without service disruption.
Power Supply Redundancy
The SPARC Enterprise T2000 server features two hot-swappable power supplies,
enabling the system to continue operating should one of the power supplies fail or if
one power source fails.
The SPARC Enterprise T2000 server also has a single hot-swappable blower unit that
works in conjunction with the power supply fans to provide cooling for the internal
disk drives. If the blower unit fails, the three functioning fan units provide enough
cooling to keep the system running.