Optimize transfer speed between 2 unRAID servers

[ThatDude]

I need to move 9.5TB from unRAID server A to unRAID server B.

 

I was planning on enabling turbo-writes and then using RSYNC - is that the optimal method?

 

I was also wondering if mounting the share from server A as an NFS mount before using RSYNC would be quicker than using SSH on the RSYNC command line - essentially avoiding the SSH encryption overhead?

 

Or am I going about this all wrong - any advice appreciated.

[ThatDude]

To answer some aspects of my own question:

 

Creating an NFS mount and then using RSYNC to copy between that mount and the local storage is notably quicker and uses fewer CPU resources than using an SSH tunnel with RYSC.

 

Enabling Turbo Writes gives me around 90MB/s for large files as opposed to ~40MB/s with Turbo Writes disabled.

 

That seems pretty good, I'm not sure if anyone can recommend any further optimizations but please chip in if you have any ideas.