OSI/MHS Configuration and Management Manual
Introduction to OSI/MHS
OSI/MHS Configuration and Management Manual—424827-003
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Remote Operations Service (RS) Group
MS PDU Store
Each MS group has one PDU store. The PDU store consists of a data file and a log 
file. The data file is for storage of protocol data units (PDUs). The log file contains 
records that indicate the processing steps taken on specific PDUs. These files are 
defined for each MS group.
Remote Operations Service (RS) Group
The remote operations service (RS) group provides an interface from an RUA to a user 
mailbox in a message store. The RS group implements the Remote Operations 
Service Element (ROSE) protocol. The RS processes use the underlying OSI services 
as specified by the 1988 X.400 recommendations: that is, they use the ACSE and 
Figure 1-9. Message Store (MS) Group
010VST .VS D
OSI/MHS Subsystem
MS Group
MS SQL
DB
MS PDU
Store
MR Groups
MS
RS Grou ps
OSI /AS
LO Groups










