4.4.5 Edit Solaris system configuration (/etc/system) Solaris kernel parameters are set in the /etc/system text file. Software applications might require that you set parameters here to override the Solaris default settings in order for the application to function. You may also set parameters here to tune the system to optimize performance. Lotus documents any settings required in /etc/system for Domino in the release notes for the version of Domino you are installing. You can read and download the release notes and other documentation by selecting Lotus Technical Library Notes/Domino release notes at the IBM DeveloperWorks Web site: http://www.ibm.com/developerworks/ As of the time of this writing, with Solaris 10 and Domino 7.0, there are no parameters that you need to set in /etc/system; however, some recommended tuning adjustments are described in Chapter 6, "Tuning and monitoring Domino servers on Solaris" on page 207. 4.4.6 Domino partitioning Domino partitioning is when multiple instances of the Domino server run on the same machine. Currently there is no theoretical limit on the number of partitions you can run, given infinite hardware resources. However, in practical terms you will find that too many partitions on one physical box introduce complexity that might be difficult to manage. The right number of partitions for any given machine depends on available hardware and the expected load on each partition. The type and frequency of client access to the server also has to be taken into account. You can make some rough estimates using guidelines in 3.3, "Determine partition and domain counts" on page 23. As a general rule, we recommend: Limiting the number of partitions to the number of CPU cores on your machine. (Some of Sun's CPU chips have more than one core.) Also keep in mind that the load on each Domino partition depends on the workload and tasks it is performing. Each partition requires its own data directory. Where possible, each data directory should be located on a separate physical device and file system. If you are using Domino transaction logs, each partition requires its own transaction log directory. Each transaction log directory should be located on separate physical device and file system. Find more information about Domino partitions in Chapter 8, "Partitioning" on page 251. Chapter 4. Solaris 10 installation, configuration, and considerations 45