Site Planning For Fault-Tolerant Systems - NEC Express5800/320Ma Planning Manual

Site Planning for Fault-Tolerant Systems

Use the "Site Planning Checklist" on page 1-3
For a list of other documents related to your Express5800/320Ma system, see
Documentation" on page
During the site planning and preparation processes, work closely with your facilities
group or contractor to determine space, power, and environmental requirements. Enlist
their help to provide a suitable location with sufficient alternating current (AC) power,
heating, ventilation and air conditioning (HVAC) capabilities, and network and
telephone connections.
If your system is covered by a service agreement and you need help with site planning,
contact the NEC Technical Support. If you have a contract with the NEC Technical
Support to install the system, contact them after you have prepared the installation site
and moved the system to the site. For more information about NEC Technical Support,
visit http://support.necsam.com/servers.
See Appendix A, "System Specifications"
or Dual-Core system specifications and the Express5800/320Ma: Peripherals Site
Planning Guide for specifications of other components.
Site Planning for Fault-Tolerant Systems
Consider the following specific fault-tolerant features of Express5800/320Ma 3.2 GHz,
3.6 GHz, and Dual-Core systems for site planning:
•
Lockstep technology means that the Express5800/320Ma 3.2 GHz and 3.6 GHz
systems contain redundant hardware. The Express5800/320Ma 3.2 GHz and 3.6
GHz systemssystems contain two enclosures, each containing a full computing
environment that consists of a CPU element and an I/O element.
If a component in a CPU element malfunctions, the corresponding CPU element in
the other enclosure, which is processing the same information in lockstep,
continues processing without interruption. If a component in the I/O element
malfunctions, the system fails operation over to the corresponding element in the
other enclosure and continues to operate normally. The only consequences are
that the system is less fault tolerant, and any I/O throughput distributed between
the enclosures may be reduced. To restore full fault tolerance, an enclosure can
be replaced without taking the system offline.
•
Express5800/320Ma 3.2 GHz and 3.6 GHz systems can connect to the
ActiveService Network (ASN).
Connecting a system to the ASN allows the NEC Technical Support to remotely
diagnose, troubleshoot, and resolve problems online.
1-2 Express5800/320Ma: Site Planning Guide
1-5.
for Express5800/320Ma 3.2 GHz, 3.6 GHz,
to track your site preparation progress.
"System