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Forum Discussion
NAS Mirror
Currently I have 1 ReadyNAS RN2120v2. We had a recent failure on site and lost all 16TB on the NAS.
Looks like a 3138 would be close match to the 2120. 3138 is probably a little faster.
I want to create NAS to NAS mirror, on site and would like to talk about the procedure if a nas goes down.
Making the new 3138 the primary nas (because it is faster) and the old 2120 the “BACKUP” nas.
To limit down time, how would I create this so I would not have repoint everyone to the BACKUP nas in the event that the primary nas goes down?
The 3138 would be called NAS1 and would be plugged into the network switch. Could I call the BACKUP nas NAS1 also, and on this machine disable all SMB sharing?
Could the BACKUP nas be plugged directly into the primary 3138? And if the primary nas goes down I would only need to unplug the 3138 from switch, unplug the BACKUP 2120 from the 3138 and plug it into the network switch? And toggle on SMB sharing.
Basically, I want to know how easy the procedure is to switch from the primary NAS to the BACKUP nas? How clean could the procedure be, would I be needing to mess with DHCP and re-addressing the BACKUP NAS?
18 Replies
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Hi FG
The RN3138 is better than 2100 due to its specification and features.
It would be better to have two identical NAS model for the setup you want to have; this is to speed up your transition to the Backup NAS in the event of failure by restoring the configuration on the other unit and have users able to access it just like the primary NAS.
Regarding backups, backing up each share using rsync on the source or destination NAS would do the job.
If you will have two different units, the best way is to unplug the RN3138 and plug in the Backup NAS and reconfigure. This is not the best resolution for failover unlike with restoring the configuration from the same NAS, but other community members might have better ideas.
Backing up and restoring configuration steps is available here.
Backup using rsync is here.Regarding the suggestion you may want to check this thread.
Hope this helps!
Regards
Some clarifcation for me.
If you want to mirror nas 1 to nas 2, what is the best way to connect their ethernet cables?
- For each nas do you BOND the network cards together and then plug cables into the switch?
- Can you plug one nas directly into another nas?
- How would you do that? For nas 1, one cable is plugged into the switch and the 2nd is plugged into the nas 2. Then nas 2 has its 2nd cable plugged into the switch as well.
I suggest wiring them both to your switches/routers, and run rsync over the normal network.
You can use bonding if you like, but I don't think you should do that specifically for backup. If your NAS has a lot of simultaneous users, then bonding will increase the throughput.
Marc_V
Thank you for the info.
In the link below, step #9, in the remote settings, once I choose the Remote: Rsync Server for the protocol the PORT field is displayed. What port should I use. Step 9 does not show a port field.
I am trying to back up one nas to another.
On the admin page of MainNAS, under System - Settings. Rsync service is NOT enabled. The instructions did not say to do this.
On the admin page of BackupNAS, under System - Settings. Rsync is enabled
Hi FG
Rsync can be disabled on the MainNAS since the procedure is to push the data to BackupNAS.
Port being requested for RSYNC should be Port 873, please take note that you may have to configure port forwarding on your router.
following the article I am sure will get us through the backup configuration. Please let me know once everything has been set.
Happy New year!
Regards
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