NAS to NAS works one way, not the other

Discussion on remote replication.
schok
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NAS to NAS works one way, not the other

Postby schok » Mon Jul 02, 2018 8:07 pm

Hi,

Normally we replicate from NAS A to NAS B using a Replication Job. Has worked perfect for many months on a daily basis.

Due to reconfiguration and adding discs, I need a one-time replication from NAS B to NAS A, but I cannot get this to work. Creating a Replication Job from NAS B using the ip-address for NAS A as target, port 873, I get the error: "Invalid port number or the service is disabled. Please check your server settings ..." I have enabled Rsync on NAS A (was of course already enabled on NAS B).

The servers are on the same subnet.

Any good ideas will be much appreciated.

Thanks in advance.

Hans.

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storageman
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Re: NAS to NAS works one way, not the other

Postby storageman » Mon Jul 02, 2018 9:34 pm

Firmware?
Using HBS or Backup Station? If HBS Backup Server has RSYNC ticked on 873?
So on same LAN, no VPN or port forwarding needed?

schok
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Re: NAS to NAS works one way, not the other

Postby schok » Tue Jul 03, 2018 6:34 pm

Thank you for your reply, storageman.

I try to keep both NAS'es f/w-updated all the time (4.3.4.0597 (Build 20180528)). BTW, both NAS'es are completely identical.

I am using Backup Station - Remote Replication - NAS to NAS - Create a Replication Job.

Yes, it is the very same LAN, so no need for VPN og port forwarding, I think.

The exact error-message is: "Invalid port number or the service is disabled. Please check your server settings. Please check your network settings, account and password, default gateway, and whether the destination host is behind a firewall".

System Default g/w is Adapter 2 (as is should be in my case), with fall back to Adapter 3 (also connected). On the other NAS it is 1 and 4, the connected ones. Seems to fit ...

I wonder if there is a log someplace on the server ...

/Hans

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storageman
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Re: NAS to NAS works one way, not the other

Postby storageman » Tue Jul 03, 2018 8:38 pm

I would say time to stop using Backup Station. Try HBS and see what happens, the Backup server tab shows the ports.

schok
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Re: NAS to NAS works one way, not the other

Postby schok » Fri Jul 06, 2018 4:12 pm

I have just installed HBS - but I get exactly the same error using One-way Sync - Sync Local to Remote using Rsync :-(

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storageman
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Re: NAS to NAS works one way, not the other

Postby storageman » Fri Jul 06, 2018 4:23 pm

Try changing the rsync port on the destination server (remember to change port when selecting remote connection).

In SSH/putty see what happens on the command line.
rsync -av /source/directory/or/file /destination/directory/or/file

schok
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Re: NAS to NAS works one way, not the other

Postby schok » Fri Jul 06, 2018 8:29 pm

That did it! Now it works!

Thank you very much for your kind help, storageman.

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storageman
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Re: NAS to NAS works one way, not the other

Postby storageman » Fri Jul 06, 2018 8:49 pm

No worries, got there in the end!

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Re: NAS to NAS works one way, not the other

Postby P3R » Fri Jul 06, 2018 9:52 pm

Rsync is great for slow (WAN) connections but for LAN-LAN-connections, I would normally use RTRR. RTRR have more features and better performance for large file transfers.
RAID have never ever been a replacement for backups. Without backups on a different system (preferably placed at another site), you will eventually lose data!

A non-RAID configuration (including RAID 0, which isn't really RAID) with a backup on a separate media protects your data far better than any RAID-volume without backup.

All data storage consists of both the primary storage and the backups. It's your money and your data, spend the storage budget wisely or pay with your data!

schok
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Re: NAS to NAS works one way, not the other

Postby schok » Tue Jul 10, 2018 12:02 am

Thank you P3R, I will look into RTRR asap. :)


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