High Levels Of System Reliability, Availability, And Serviceability; Hot-Pluggable And Hot-Swappable Components - Sun Oracle Sun Netra T5440 Installation Manual

For information about configuring and using the ILOM service processor, refer to the
latest Integrated Lights Out Management (ILOM) User's Guide and the Sun Integrated
Lights Out Manager 2.0 (ILOM 2.0) Supplement for the Sun Netra T5440 Server.
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 Sun Netra
T5440 server offers the following features:
Ability to disable individual threads and cores without rebooting
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Lower heat generation reduces hardware failures
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Hot-pluggable hard drives
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Redundant, hot-swappable power supplies (four)
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Redundant fan units (not hot-pluggable)
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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

Sun Netra T5440 server hardware is designed to support hot-plugging of the chassis-
mounted hard drives 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.
18 Sun Netra T5440 Server Installation Guide • May 2011