Fujitsu SPARC ENTERPRISE T5240 Overview Manual - Page 24
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High Levels of 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 T5140 and T5240 servers offer the following features:
Ability to disable individual threads and cores without rebooting
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Lower heat generation, reducing hardware failures
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Hot-pluggable hard drives
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Redundant, hot-swappable power supplies (two)
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Redundant N+1 hot-swappable fan modules
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Environmental monitoring
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Internal hardware drive mirroring (RAID 1)
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Error detection and correction for improved data integrity
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Easy access for most component replacements
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Hot-Pluggable and Hot-Swappable Components
SPARC Enterprise T5140 and T5240 server hardware is designed to support hot-
plugging of the chassis-mounted hard drives, and hot-swapping of 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 and hot-plug 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 T5140 and T5240 servers provide two hot-swappable power
supplies, enabling the system to continue operating should one of the power
supplies fail or if a power source fails.
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SPARC Enterprise T5140 and T5240 Server Overview Guide • February 2008