Put new NAS on network.
Copy/Paste files from old NAS to new NAS.
Disconnect old NAS from network.
It's only 1.1TB, just let it run and go grab a sandwich at the local deli or something. No magic here, just a basic file transfer.
Exactly. Unless something is time critical, just have them both on the same network, copy/paste.
That said, I plan on speeding up my transfer when I replace the RAID0 array in my desktop with a couple of 3TB disks in the near future. I have the advantage of Win8/8.1 and SMB3, with SMB Multichannel. I currently have two links for my server and desktop, so I can already hit around 235MB/sec (when the RAID array supports it, which the current one, especially on my desktop, can't. More like 200-210MB/sec right now). Because of the extra speed of the new array, I am going to try running a patch cable between the machines and bring the built in NICs online to see if it'll work with 3 links (not sure if the built in NICs in the machines support RDMA, I do know they support RSS which is required for Multichannel).
Then I can stuff the files over at ~350MB/sec, RAID Arrays allowing (which they won't, the 4TB array in my server will probably hit 280MB/sec downhill with a tailwind on the outer tracks, but its still faster than the 235MB/sec 2 GbE limit me to).
Its more nerd cred/experimentation to see if it'll work. I only have ~2TB of data to copy when I replace the array (I do not have any external enclosures that'll support 2 drives, let alone 2 drives in RAID0, so I can't transfer that way and I don't have the spare SATA ports to leave the array in and do a local copy that way), but meh. Fun project. Otherwise I'll just putter along at 235MB/sec. Its only a 2 1/2hr job.