Command Reference Guide

MXCS Architecture Overview
SQL/MX Connectivity Service Administrative Command Reference—526350-005
1-6
Complex System Configuration
Service A. Service A monitors the three MXCS servers it has started in addition to the
DS and EVARs they use. Each server uses only a few attributes of one DS (like time-
out, trace, and statistics flags) and has all EVARs that belong to that DS defined in its
environment.
The servers owned or started by Service A all run on CPU 5. Service B has two
servers on CPU 9 and one server running on CPU 11. Using the CpuList parameter,
each DS defines where the service can start servers using that DS. It is possible that
DS 1 has only CPU 5 in its list, while DS 2 has both CPU 5 and 9 in its list, and DS 3
has CPU 9 and 11. To accurately determine which CPUs are permitted, display the
detailed information about each DS by using one of the MXCS administrative
commands.
Figure 1-2. Complex MXCS Configuration
HP
NonStop
System
MXCI
MACL
Library
Client
Library
Server3
EVAR
3
DS2
Info
Server1
EVAR
1
DS1
Info
EVAR
2
Server2
EVAR
1
DS1
Info
EVAR
2
SERVICE A
DS1
Instance
DS2
Instance
DS3
Instance
Config
Server A
Assoc
Server A
CPU 5
Server4
EVAR
3
DS2
Info
Server5
DS3
Info
SERVICE B
DS1
Instance
DS2
Instance
DS3
Instance
Config
Server A
Assoc
Server A
CPU 9
Server6
DS3
Info
CPU 11
SQL/MX Database Tables
DS1
On Disk
DS3
On Disk
DS2
On Disk
EVAR1
On Disk
EVAR2
On Disk
EVAR3
On Disk
SQL/MX Database Engine
VST004.vsd