Images using redis cache Linux master-slave synchronization server hard drive full of moved to the new directory which points to be modified

The master-slave synchronization server is configured with linux, mysql, nginx, redis, memcache, and the server image storage hard disk directory fastdfs accounts for 90% and may be almost full. Copy the following image storage directory to a brand new hard disk, I haveI have modified the configuration directory in nginx to point to, but it still doesn't work. What other configuration needs to be modified?specific order?