OSI/MHS Management Programming Manual
Introduction to Management Programming for 
OSI/MHS
OSI/MHS Management Programming Manual—424824-001
1-7
Control-and-Inquiry Interface
Control-and-Inquiry Interface
All of the processes in OSI/MHS are controlled by the MHS manager. The MHS 
manager is a key component in the control-and-inquiry interface. Figure 1-4 shows the 
management interface to OSI/MHS for commands and responses.
The management of the OSI/MHS subsystem requires the Subsystem Control Point 
(SCP) process. This process provides control-and-inquiry management interfaces to a 
number of Compaq subsystems. Commands are sent to SCP, which forwards them to 
the appropriate subsystems or, in the case of a small number of commands, handles 
them itself. SCP is used internally by the SCF interactive interface, as well as by 
management applications you write.
As shown in Figure 1-4
, the SPI sends each OSI/MHS command to and receives a 
response from the MHS manager. Both the commands and the responses are formatted 
as SPI buffers. (SPI buffers are described in Section 2, Communicating with the 
OSI/MHS Processes.)
For more information about the MHS manager and how to manage the OSI/MHS 
subsystem, refer to the OSI/MHS Configuration and Management Manual. For more 
information about the use of SCP by management applications, refer to the SPI Common 
Extensions Manual.
Figure 1-4. OSI/MHS Control and Inquiry Management Interface 
104CDT .CDD
SCP
SCF
OSI/MHS Subsystem
MR Groups
MHS 
Manager
Config.
Databases
MS Groups
RS Groups
Management
Application
Configuration and Control Components
LO Groups
GI Groups
User










