Remote Management Console (Rmc) - Compaq AlphaServer ES40 Service Manual

1.10.2 Remote Management Console (RMC)

The remote management console (RMC) provides a mechanism for
remotely monitoring a system and manipulating it on a very low level.
It also provides access to the repository for all error information in the
system. This provides the operator, either remotely or locally, with the
ability to monitor the system (voltages, temperature, fans, error status)
and manipulate it (reset, power on/off, halt) without any interaction on
the part of the operating system.
The RMC can also detect alert conditions such as overtemperature, fan failure,
and power supply failure and automatically dial a user-defined pager phone
number or another computer system to make the remote operator aware of the
alert condition.
The RMC logic is implemented using an 8-bit microprocessor (PIC 17C44) as the
primary control device. Support devices include:
•
Flash RAM (for code storage)
•
Address latch
•
Dual universal asynchronous receiver/transmitter (DUART)
• 2
8-bit I C port expanders
•
2
I C temperature sensors
•
2
I C nonvolatile memories (NVRAM)
•
Programmable array logic (PAL)
•
Dual-port RAM (DPR)
•
RS232 drivers and receivers
Chapter 7 describes the operation and use of the RMC.
System Overview 1-23