Virtual Hometerm Subsystem (VHS) Manual (H06.03+)

Introduction to VHS
Virtual Hometerm Subsystem (VHS) Manual—429311-001
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VHS Architecture
VHS Architecture
Figure 1-1 shows a simplified picture of the VHS architecture. It depicts the NonStop
portion only, without the Pathway environment.
VHS and Management Applications
VHS works with management applications, such as ViewPoint and NonStop
NET/MASTER, or it can be run directly from the Compaq Tandem Advanced
Command Language (TACL) prompt. You can have all the messages from VHS
included in EMS events and sent to the EMS collector.
VHS Subsystem
The VHS subsystem has two key files: the prompt file and the primary log file. VHS
stores application prompt messages in its prompt file and stores all messages it
receives in its primary log file. VHS sends event messages to the EMS collector and
optionally to a console facility for display messages only.
Figure 1-1. VHS Architecture
Automation
Software
Console
Facilities
Application
Environment
Management VHS
Applications Subsystem
EMS
Collector
Consumer
Distributor
EMS Log
$VHS
VHS
Prompt
File
VHS
Primary Log
File
VHS
Inspect
File
Inspect or
Debug
Saveabend
File
Application
VST011.vsd