Pelo Padrão de Hierarquia do Sistema de Arquivos , /var/lib/
pode ser o lugar certo:
This hierarchy holds state information pertaining to an application or the system. State information is data that programs modify while they run, and that pertains to one specific host. Users must never need to modify files in /var/lib to configure a package's operation.
State information is generally used to preserve the condition of an application (or a group of inter-related applications) between invocations and between different instances of the same application. State information should generally remain valid after a reboot, should not be logging output, and should not be spooled data.
/etc
não é adequado para dados de calibração, pois o / etc deve poder ser montado como somente leitura a>.