# Installation Guide

### Setting up EMRSV for Linux

EMSRV for Linux supports a maximum repository size of 2 GB on EXT2FS volumes.

EMSRV for Linux implements authentication using PAM. This allows both shadowed and non-shadowed passwords to be supported with one EMSRV executable. In addition, Red Hat Linux supports MD5 passwords and EMSRV also supports these via PAM.

PAM must be correctly configured on a machine running EMSRV otherwise it will not even be possible to shutdown EMSRV using EMADMIN. The PAM configuration file must be copied to `/etc/pam.d/emsrv`. A sample PAM configuration file is included in /opt/IBMvast/6.0/samples/PAM.

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