can you post here printenv command here? We need to check the some parameter.
Another way is you can try netboot.
1. configure either you computer or another storage system as a tftp or http server.
2. Copy the netboot image to server folder.
3. set ip address your 3140 to connect to tftp server. (LOADER> ifconfig e0a -addr=filer_addr -mask=netmask) (ifconfig e0a -addr=10.10.10.2 -mast=255.255.255.0)