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aya-3181 avatar image
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aya-3181 asked aya-3181 commented

DPM 2016:Many online recovery points failed.

I'm using DPM 2016.
I'm having difficulty getting online backup to Azure.

error message is:
The operation attempted cannot be performed at this time because maximum number of parallel backup jobs are already running. (ID 100104)
Wait until the other backup operations finishes or cancel the currently running backup operation, and then try again.

How much maximum number of online backup jobs in DPM 2016?

This error has happened many times and many protection groups.
I can handle one or two of them, but this is too much.

Please help me with problem.
My English is poor, but thank you for your kindness.

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LeonLaude avatar image
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LeonLaude answered aya-3181 commented

Hi @aya-3181,

The maximum number of online backups is eight (8), it seems that your DPM is trying to exceed that amount.

This limit can be modified by adding a registry key by running the below from an elevated Command Prompt.

REG ADD "HKLM\Software\Microsoft\Microsoft Data Protection Manager\Configuration\DPMTaskController\MaxRunningTasksThreshold" /v 6e7c76f4-a832-4418-a772-8e58fd7466cb /t REG_DWORD /d 8 /f

Once you've run the above command, reboot the DPM server.


If the reply was helpful please don't forget to upvote and/or accept as answer, thank you!


Best regards,
Leon

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@LeonLaude Thanks for your help.

What is the range of values that can be set there?
I guess it depends on the system environment, but is there a recommended value?

If i raise the maximum numbers, Anything else I should consider?
e.g cpu, memory, I/O etc

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The only concern may be the network bandwidth and the disks (read/write), depending on what disks you use (SSD/HDD).
The value depends entirely on your environment/configuration, you could test to see what works for you, anything between 1-8.

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@LeonLaude Thanks for your help.

you could test to see what works for you, anything between 1-8.

In my environment, this registry key does not exist.
Does this error mean that DPM is trying to exceed the maximum number of online backups of 8, but I have to add a registry key to set it to 8?
If the configurable range is 1-8, does that mean that more parallel execution is impossible?
I am sorry if my interpretation is mistaken.

I'm using mainly HDD, and SSD for some storage areas.
I'm aware that bandwidth is not a problem since we have set a limit in DPM.
Apart from this case, we are also having problems with the backup process not succeeding on schedule, so the disk load is going to be a concern.


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