RAM 

1-2 GB for evaluation purposes 

Minimum 2GB for production servers 

Local disk space 

300 MB disk space for binaries. By default, binaries installed from native packages are placed in /opt on UNIX systems.

For evaluation purposes, an additional 2 GB local disk space per server instance is sufficient to hold server logs when the default configuration is used. 

Directory Proxy Server does not support installation on NFS-mounted file systems. Sufficient space should be provided for the instance, and for all files used by the instance on a local file system in, for example, /var/opt or /local.