Sun Microsystems 220R manual Error-correcting code ECC on memory and all data paths

The system console device can be a standard ASCII character terminal or a local windowing subsystem. The ASCII terminal connects to one of the system’s two serial ports, while a local windowing subsystem in a graphics console requires installation of a PCI frame buffer card, monitor, keyboard, and mouse. UPA graphics is not supported in the Sun Enterprise 220R server. The server can also be administered from a remote system connected to the server over an Ethernet network.

The Sun Enterprise 220R server provides two serial communications ports through a pair of DB-25 connectors located on the back panel. It also provides one external, 2-Mbyte per second, bidirectional, Centronics-compatible, enhanced parallel port (EPP) for connecting the system to a local printer or other compatible parallel device.

Power is provided by one or two 380-watt power supplies with dual internal fans. System configurations with two power supplies provide both redundancy and full hot-swap capability. For more information about the power supplies, see “About Power Supplies” on page 76.

The Sun Enterprise 220R server has a rackmounting kit for installation into standard 29-inch to 32-inch (73.6-cm to 81.3-cm) deep EIA 310-compliant 19-inch (48.26-cm) wide racks, with at least four rack units (7.0 inches, 17.78 cm) of vertical mounting space available per server, and sufficient load-bearing capacity.

System reliability, availability, and serviceability are enhanced by features that include:

■Error-correcting code (ECC) on memory and all data paths

■Parity checking on all address buses

■Front panel status indicator lights

■Hot-pluggable internal disk drives with easy front access

■Support for RAID 0, 1, 0 + 1, and 5 implementations

■Power system monitoring and fault protection

■Power supply redundancy

■Hot-swap power supplies with easy front panel access

■Four levels of system diagnostics

■Easy front, top, or back access to all internal replaceable components

For additional details, see “About Reliability, Availability, and Serviceability Features” on page 62.

Chapter 1 System Overview 3