Reliability, Availability, and Serviceability (RAS)
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 Netra
TM
X4200 server offers the
following features:
• Simplicity of design with the AMD Opteron processors and HyperTransport requires less components
and thus provides higher reliability
• ECC memory with ChipKill supported
• Up to two hot-pluggable hard drives with DVD or up to four hot-pluggable hard drives with no DVD
• Hardware RAID (0 + 1) striping and mirroring
• Two redundant, hot-swappable AC or DC power supplies
• Built-in quad Gigabit Ethernet ports provide redundancy
• Environmental monitoring
• Easy access for most component replacements
• Dry Contact Alarms enable Telco operators to use a relay to signal fault conditions to a rack or control
room panel as well as an alarm monitoring system.
Just the Facts, August 2007 Sun Confidential: Internal and Sun Channel Partners Use Only 24
