In a large installation, the Filr components can be deployed as separate appliances.
Filr Appliance: You can run multiple instances of the Filr appliance, which allows the Filr system to handle more users. For information about installing multiple Filr appliances, see Section 2.1, Installing the Filr Appliance.
Lucene Index Server Appliance: You can run multiple instances of the Lucene index server appliance (no more than two is recommended), which provides fault tolerance or backup in the event that one index server fails. Load balancing is not supported between index servers. For information about installing multiple Lucene index server appliances, see Section 2.2.1, Installing the Search Index Appliance.
MySQL Database Appliance: You can run only one instance of the MySQL database appliance. For information about installing a MySQL database appliance, see Section 2.2.2, Installing the MySQL Database Appliance.
For information about possible configuration setups and how many users are appropriate for each setup, see Section 1.6, Recommended Hardware Configurations Based on System Performance.
Filr clustering involves two or more Filr VAs sharing the same NFS data storage location (/vashare). Basic steps for setting up Filr clustering are included in Figure 1-1.
Figure 1-1 Clustered Filr VAs