Modification of relay cache location for linux

I was trying to increase cache limit of relays to 50 GB. But I have found few of the relays have <5 GB on the relay installed file system. Is there any way to change cache location to another file system?

There are different approaches depending on the OS hosting the Relay. Which OS(es) are in scope?

The relay OS is RHEL 6

In that case, one of the simpler approaches might be to create a symlink for /var/opt/BESRelay to the desired filesystem.