DPM Online Recovery Point creation gets stuck with few MB
Frage
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Dear community,
we have a strange issue on our hand and I have no more ideas on how to fix this. Maybe someone here can help.
Our company has 4 sites. All the same domain but ~3 weeks ago every site's DPM backups have started regularly failing the online restore point creation for a few servers. This literally is only for a few, yet always the same virtual machines. When the job starts, it begins to count up the processed MB but stops after a while. No matter how often I make consistency checks or start over, it always gets stuck and always on a different amount of MB.
I thought maybe it is a display error at first or it slows down immensly after a while but not, it just gets completely stuck. Even after leaving the job open for 160 hours, not a single MB has changed:
The servers to be backed up that are failing are always the same and always only the same drive on these servers. Local recovery point creation is not affected.
Our setup is as follows:
- Hyper-V-Hosts (clustered on one site, the athers are standalone), Server 2016
- DPM 2016 on Windows 2016 physically (yes on fast Server hardware)
- 10GBbit Network internally 100MBit synchronous DSL
- Always latest patchlevel
- Always latest DPM agent
- Defender-Settings on DPM set to best practices (see here)
- Windows Firewall on DPM set to best practices
What I have tried to fix this:
- Restarted everything
- Did consistency checks
- Double-ckecked AV and Firewall settings (disabled both even for testing puroses)
- did a checkdisk on the affected drives
- deleted (locally and on Azure) and recreated the protection for the affected drive
- deleted (locally and on Azure) the protection for the affected server completely and recreated it in a new Protection group
- disabled VMQ for testing even though we have Intel NICs (see here)
Still, this error repeats itself. It is as if something is stuck in Azure. While these few machines fail, others are running smoothly for weeks doing syncs, backup locally and to Azure.
Does anyone have any more idea on how to approach this issue? I am still a bit new to DPM, I inherited it all from a former admin and so far it ran smooth until this started.
Any help is appreciated.
...ich bin der Jäger des Mondes, bis der Morgen erwacht!
- Bearbeitet Niwo Sapphire Montag, 1. März 2021 10:10
