184 is my main server.
and the copy command took a huge time (30 mins)
There are many reasons why NFS (Network File System) copying is slow on Linux or Unix. If I were you, I would check them one by one (some option requires root level access)
- If the network bandwidth is limited, it can affect the performance of NFS copying. See for network bottlenecks. Are you using Jumbo frames on both the server and network switch?
- Since NFS is the network file system, it depends on the network for file transfers, so latency can significantly impact performance.
- Is the NFS server overloaded? Many users, client machines and open files can cause these issues.
- The configuration of the NFS client can also impact performance. You need to set the correct options.
- Sometimes the disk on either the server or client-side is slow, which can also cause slow NFS copying. Also, check if the disk is healthy and if there are NO disk errors on both server and client.
- Large files or files with many small files on NFS server storage always take longer to transfer.
- NFS can be secured using various methods such as VPN, and NFSv4 Kerberos. These can also impact operations.
You don’t say how much data and how many files/folders there is.