5.4 Operating System considerations This section provides considerations for Operating Systems running on the IBM Tivoli License Manager servers. While hardware configurations may differ among ITLM Administration servers, ITLM Runtime servers, and database servers, Operating System settings must be, as much as possible, standardized. This assures a consistent and performing environment is in place and facilitates change, support, and problem determination activities. It is recommended that the Operating System configuration of each server in the IBM Tivoli License Manager environment be documented and maintained. In addition to that, any required changes in terms of Operating System settings must be performed in every server with the same role, for example, a security patch applied simultaneously to every ITLM Runtime server running the Windows Operating System. The following topics are discussed in this section: 5.4.1, "Supported Operating Systems" on page 120 5.4.2, "General performance considerations" on page 121 5.4.3, "File system and directory structure" on page 124