Sun Microsystems Fire 880, Руководство пользователя

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14 Sun Fire 880 Server Owner’s Guide • August 2001
About Reliability, Availability, and
Serviceability Features
Reliability, availability, and serviceability are aspects of a system’s design that affect
its ability to operate continuously and 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 percentage of
time that a system remains accessible and usable. 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 Fire 880
system offers the following features:
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Hot-pluggable disk drives and PCI cards
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N+1 power supply redundancy
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Hot-swappable power supplies
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Redundant, hot-swappable fan trays
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Environmental monitoring and fault protection
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Automatic system recovery (ASR) capabilities
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Hardware watchdog mechanism
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Remote System Control (RSC) remote “lights out” management capability
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Support for disk and network multipathing with automatic failover capability
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Dual-loop enabled FC-AL mass storage subsystem
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Support for RAID 0, 1, 0+1, 1+0, and 5 storage configurations
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Error correction and parity checking for improved data integrity
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Easy access to all internal replaceable components
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Easily accessible LED status indicators
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Four different levels of system diagnostics