The supported system configurations depend on whether you install the product on a single server or multiple servers.
Single server installation
After you install the software on one computer, you can install additional servers to support search and document processing. For example, you might want to set up several search servers to spread the query processing load across processors. If you install the product on additional servers, you must use the administration console to specify the purpose of the server.
Install the crawl, index, and search components
on one computer. You can then add servers to support the following
activities:
- Search
- To provide increased scalability and high availability for query processing, including processing requests for deep inspection of text analysis results, you can add multiple search servers.
- Document processing
- To provide increased scalability and failover support for parsing and analyzing documents, you can add multiple document processing servers.
- Backup server for high availability
- To provide increased throughput and failover support for crawling and indexing documents, you can add one high availability backup server on AIX® or Windows platforms. This server is supported through IBM® PowerHA® for AIX and Microsoft Cluster Service (MSCS) on Windows. You must ensure that the backup server that you add and the master server share the same data directory (ES_NODE_ROOT). The backup server is a cold standby server.
The following figure shows a sample single server
configuration.
Figure 1. Sample single server
configuration
Distributed server installation
If you install the product on more than one computer, you must install the base product on one server, called the master server. You can then add servers to support the following activities:
- Crawl
- You must install one master crawler server to support crawlers.
- Search
- You must add at least one server to support search. To provide increased scalability and high availability for query processing, including processing requests for deep inspection of text analysis results, you can add multiple search servers.
- Document processing
- To provide increased scalability and failover support for parsing and analyzing documents, you can add multiple document processing servers.
- Backup servers for high availability
- To provide increased throughput and failover support, you can add one high availability server for crawling documents and one high availability server for indexing documents on AIX or Windows platforms. This server is supported through IBM PowerHA for AIX and Microsoft Cluster Service (MSCS) on Windows. You must ensure that the backup server that you add and the master server share the same data directory (ES_NODE_ROOT). The backup server is a cold standby server.
The following figure shows a sample
distributed server configuration.
Figure 2. Sample
distributed server configuration
