AutoSYNC Software User's Guide (Update 20)

AutoSYNC Overview

HP AutoSYNC User’s Guide—522580-021

1-4

Reporting

It is often difficult to measure how dynamic your processing environment really is. The

reporting function allows you to evaluate the amount of change that occurs on the file

sets you wish to synchronize, without performing the actual data movement. Reporting

is useful for planning system migrations and for configuring the frequency of scheduled

synchronizations, either for disaster recovery or for data distribution purposes.

Limitations

The following product limitations apply:



Enscribe alternate keys are not automatically synchronized with the base file,

unless they are included in the file set definition.



SQL tables with indexes residing in a subvolume other than the base table

subvolume are synchronized, but the user must provide the mapping between the

source and destination volume names; otherwise all index tables are placed into

the subvolume of the base table.

AutoSYNC Component Description

AutoSYNC has three primary components, a command interpreter, AUTOSYNC, a

monitor process, $ZASY, and a synchronization program ASYSYNC.

AUTOSYNC Command Interpreter

The command interpreter is the user interface for performing both administration and

configuration of AutoSYNC, as well as requesting one-time synchronization and other

utility functions. It has a syntax similar to SQLCI.

AutoSYNC Monitor Process

The NonStop AutoSYNC monitor process, $ZASY, is a fault-tolerant process pair.

When synchronizations are scheduled, it ensures that the proper synchronization

processes are executing. It reports to the operator, through EMS, any anomalies that

have disrupted proper synchronization.

ASYSYNC and ASYSYNCP Synchronization Programs

The ASYSYNC and ASYSYNCP programs manage the synchronization. A one-time

SYNCHRONIZE command over Expand executes an ASYSYNC process. A one-time

SYNCHRONIZE command over TCP/IP executes an ASYSYNCP process. For a

scheduled synchronization, the monitor process executes an ASYSYNCP process.

This manual refers to all such processes as ASYSYNC.

ASYSYNC manages files in the source file set and starts a second ASYSYNC process

to manage files in the destination file set. The two processes execute in parallel and