Interstage Shunsaku Data Manager Operator's Guide - Microsoft(R) Windows(R) 2000/ Microsoft(R) Windows Server(TM) 2003 - - UNIX -

4.1 Guide for Maintenance Operation

This sections explains how to maintain the Shunsaku system.

The maintenance operations are as follows:

• Changing System Configuration
  • Adding Searchers and Search Servers
  • Adding Directors and Director Servers
  • Adding Sorters and Sort Servers
  • Deleting Searchers
  • Deleting Directors
  • Deleting Sorters
  • Changing the Data Insertion Destination Director
• Optimizing Data
  • Redistributing Search Data
  • Optimizing Director Data Files

The guides of maintenance operation for changing system configuration and optimizing data are shown below.

Changing System Configuration

The guides of maintenance operation for changing system such as adding search servers, director servers, and sort servers are as shown below.

Guide to Adding Searchers or Search Servers

Add extra searchers or search servers if search speed needs to be increased or if the amount of data is expected to increase.

Guide to Adding Directors or Director Servers

If there is a possibility that the limits of the hardware capacity will be reached if multiple directors are allocated to a single director server, prepare multiple director servers and allocate a director to each one.

Guide to Adding Sorters or Sort Servers

Perform load balancing by adding sort servers if a large number of sort processes are being performed concurrently and the CPU usage by sort processes is high.

Optimizing Data

Guide to Redistributing Search Data

Redistribute search data if search data is not evenly allocated between search servers. Use the information displayed by the shundstate command to compare the amount of data allocated to each connected searcher.

Guide to Optimizing Director Data Files

Optimize director data files if the amount of wasted space in the director data files has increased. Refer to the fragmentation rate displayed by the shundstate command.

This chapter assumes that either or both of the following multi-server configurations are in place:

• Systems operating with an additional director server
• Systems operating with an additional sort server

Users of systems that operate on a single server or systems in which searchers run on separate servers should only read sections relevant to their configuration.