Readynas Duo RND2110 v2 DISC Compatibility

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Holtyuk wrote:

 

Do I

1. Put the original 2TB drives into the new 212 NAS and let it do its thing to recognise them

2. Individually hot swap out the old 2TB with the new 4TB drives in the new 212

 

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You'll find the RN212 a lot faster than your Duo, and it has features that the Duo lacks. But the RN212 disks are formatted differently from the Duo, so you can't migrate the disks directly.  

Instead you can set up the RN212 with just the new disks - creating the shares you need. Wait for the RAID to be set up before transfering files (it will be faster than trying to transfer them while the RAID array is syncing).  Also re-recreate any user accounts you have on the Duo.

Then transfer the data from the Duo using the built-in backup jobs.  Personally I do that with one backup job per share.  I use rsync as the protocol.  These backups transfer data directly from the Duo to the RN212 - so they don't tie up your PC.  The process is easier than it looks, I'm just spelling out all the details.

The process below assumes you aren't using the "home" share feature of the Duo (also described as the "private" share feature.  They need to be differently, so let me know if you need help with that.  FWIW, I suggest that you not use that feature on the RN212 (most home NAS users don't really need it).  

Once you have the new shares set up on the RN212, you'd

 1. enable rsync for all the shares on the Duo

 2. create a backup job for the smallest share, using rsync.  That lets you test the process

• the source is remote, using the Duo's IP address and the share.
• the destination is the RN212 share
• don't schedule them
• set the option on the advanced tab to delete any files on the destination that are no longer on the source.

 3. Create similar backup jobs for your remaining shares, and start them.  They will be queued up (running one at a time).

Note you can continue to use the Duo while the data transfer is running.

When everything is moved over (which could take a couple days), then you are ready to switch over to the new NAS.  You re-run all the backup jobs you've created - that will transfer any files that changed during the process.  This "cleanup" step will run very quickly. 

The last steps are to go to the file access tab of every share, and set the owner/group as desired.  Then reset the file permissions for the share.  If you restrict access to some shares, then set up the network access controls.

Once you've switched to the RN212, you can continue to use the Duo as a backup NAS.  I use my own Duo that way.  All you need to do is reverse the source/destination of the backup jobs on the RN212 and set the backup schedule you want. 

If you want to try and back up everything to the Duo, then you can rebuild the Duo as jbod with 2 volumes.  That would give you 4 TB of capacity.  Balance the free space across the two drives (easiest if you work from the biggest share to the smallest).