Duple Backup not working or VERY slow

Duple Backup has powerful backup and restore functions, and is a disaster recovery tool designed to strengthen the data security of TNAS devices.
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Futaba3vc
Posts: 11
Joined: 17 Nov 2024, 01:01
Great Britain

Duple Backup not working or VERY slow

Post by Futaba3vc »

Hello
Im new to duple backup / duple vault, I have a T4-424 and i want to back it up to my new T6-424 but the transfer is 650Kbs at best.
What is going wrong please both are in the same home on the same network and both wired on a gigabit network.

I have a new issues where duple backup /vault saying the service application service is not enabled Any ideas please ???
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Futaba3vc
Posts: 11
Joined: 17 Nov 2024, 01:01
Great Britain

Re: Duple Backup not working or VERY slow

Post by Futaba3vc »

So i have found more info the application keeps closing the service once a back up starts.
If i disable and re-enable it works then does samething straight away ?
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GevinKe
TM Product Manager
Posts: 251
Joined: 08 Dec 2023, 10:27
China

Re: Duple Backup not working or VERY slow

Post by GevinKe »

Futaba3vc wrote: 06 May 2025, 06:05
Hello! To better identify the issue, we need to confirm the following information with you:
  • What backup mode are you currently using?
  • Does the backup data contain a large number of small files?
  • We suggest testing by backing up a single large file to see if the transfer speed is normal.
If the two devices are physically close, try directly connecting their second Ethernet ports with a LAN cable. When creating the backup task, set the target IP to the IP address of that second port. This setup can improve backup speed and connection stability.

Regarding the service frequently shutting down during backup, please follow these steps:
  • In both Duple Backup and Duple Backup Vault, go to Logs > Settings > Export Debug Logs,
  • Send the exported logs to support(at)terra-master.com,
  • Include a link to your issue in the email so we can trace it more efficiently.
Once we receive the logs, we will analyze them and get back to you as soon as possible.
To contact our team, please send email to following addresses, remember to replace (at) with @:

Technical team: support(at)terra-master.com(for technical support)
Service team: service(at)terra-master.com(for purchasing, return, replacement, RMA service)
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Futaba3vc
Posts: 11
Joined: 17 Nov 2024, 01:01
Great Britain

Re: Duple Backup not working or VERY slow

Post by Futaba3vc »

Hello im using MIRRORED and im moving 36TB made up files about 18gb each.
Duple will not work any more it closes the service straight away.I even purchased a 10gb switch setup link aggregation and service still closes

I will send over the logs now

Thanks for you help so far.
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GevinKe
TM Product Manager
Posts: 251
Joined: 08 Dec 2023, 10:27
China

Re: Duple Backup not working or VERY slow

Post by GevinKe »

Futaba3vc wrote: 08 May 2025, 04:56 Hello im using MIRRORED and im moving 36TB made up files about 18gb each.
Duple will not work any more it closes the service straight away.I even purchased a 10gb switch setup link aggregation and service still closes

I will send over the logs now

Thanks for you help so far.
Thank you for your cooperation! We will arrange for our development engineers to analyze the logs you provided and identify the issue.

If you need to perform backups between TNAS devices, we recommend using Terrasync or TFM Backup, both of which can meet your needs. For a detailed comparison of backup tools, please refer to this link: viewtopic.php?t=6093

Please note that since you are backing up a large amount of data, when using Terrasync, considering that the destination will store versioned data, it is recommended to reserve at least 40TB of storage space on the target device to avoid backup issues. Thank you again for your support of TerraMaster!
To contact our team, please send email to following addresses, remember to replace (at) with @:

Technical team: support(at)terra-master.com(for technical support)
Service team: service(at)terra-master.com(for purchasing, return, replacement, RMA service)
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Futaba3vc
Posts: 11
Joined: 17 Nov 2024, 01:01
Great Britain

Re: Duple Backup not working or VERY slow

Post by Futaba3vc »

Thank you for getting back to me any ideas why transfer is only at about 300Kbs ?

i have sent over the debug logs ? at current speed if you can please advise ?
User avatar
GevinKe
TM Product Manager
Posts: 251
Joined: 08 Dec 2023, 10:27
China

Re: Duple Backup not working or VERY slow

Post by GevinKe »

Futaba3vc wrote: 08 May 2025, 11:10 Thank you for getting back to me any ideas why transfer is only at about 300Kbs ?

i have sent over the debug logs ? at current speed if you can please advise ?
Which of the applications mentioned above were you using when the transfer speed was only 300KB/s? We suggest trying file transfer via SMB to see if the speed is similarly slow. If all transfer methods are slow, the issue may lie with the network rather than a specific application. You can visit our official website (https://www.terra-master.com/global/) and contact our Live Chat —we’ll be glad to assist you in troubleshooting the problem.
To contact our team, please send email to following addresses, remember to replace (at) with @:

Technical team: support(at)terra-master.com(for technical support)
Service team: service(at)terra-master.com(for purchasing, return, replacement, RMA service)
User avatar
Futaba3vc
Posts: 11
Joined: 17 Nov 2024, 01:01
Great Britain

Re: Duple Backup not working or VERY slow

Post by Futaba3vc »

Hello I got duple working and it transfers at around 300Kbs regardless if
I do direct connection between both t4-424 and t6-424
wire both back to router individually
or even if I'm using link aggregation at 20GBs between both units via a link aggregation network switch which both units are connected too.
At best it may go up to 1.3MBs but only for a minute or two , for me there is something in the system that is wrong not the network itself as all methods above do the same thing , I have even checked port configs that confirm what speed should be but do not perform to the speeds.
how best do I proceed ? reading online it says installing Iperf is this recommended ?
if I use SMB will this work for direct backup of the T4 to the T6.

Regards

Tim
User avatar
GevinKe
TM Product Manager
Posts: 251
Joined: 08 Dec 2023, 10:27
China

Re: Duple Backup not working or VERY slow

Post by GevinKe »

Futaba3vc wrote: 08 May 2025, 17:30 Hello I got duple working and it transfers at around 300Kbs regardless if
I do direct connection between both t4-424 and t6-424
wire both back to router individually
or even if I'm using link aggregation at 20GBs between both units via a link aggregation network switch which both units are connected too.
At best it may go up to 1.3MBs but only for a minute or two , for me there is something in the system that is wrong not the network itself as all methods above do the same thing , I have even checked port configs that confirm what speed should be but do not perform to the speeds.
how best do I proceed ? reading online it says installing Iperf is this recommended ?
if I use SMB will this work for direct backup of the T4 to the T6.

Regards

Tim
Hi, Tim!
For issues related to system network transfer speed, we recommend contacting Live Chat for more efficient communication. Our technical experts will also provide you with professional assistance.

If you wish to perform backups between two TNAS devices, in addition to directly copying data via SMB, you can also use the Rsync backup function. On the TOS desktop, click the "Backup" option at the top, select "Rsync Backup," and follow the instructions to complete the task setup.
To contact our team, please send email to following addresses, remember to replace (at) with @:

Technical team: support(at)terra-master.com(for technical support)
Service team: service(at)terra-master.com(for purchasing, return, replacement, RMA service)
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