On AIX, you must enable large file support for both the volume hosting a repository and the user starting the EMSRV process. When creating a filesystem, ensure that the arguments -o bf=true are used with mkfs.
To set the limits for the user starting the EMSRV process, specify the number of 512 byte blocks as arguments on the -Hf and -Sf options of the ulimit command. Use the following commands to enable repositories up to 16 GB in size:
ulimit -Hf 33554432 ulimit -Sf unlimited
EMSRV for AIX authentication is implemented using the system authenticate() function. This allows one EMSRV executable to support both shadowed and non-shadowed passwords in addition to DCE authentication. The authentication method for each user is set in the /etc/security/user file.