Out of RAM error
We're having an odd problem with our HC3 environment. Our virtual agent VM is assigned 2 cores and 8GiB assigned. Months ago we had an error about an Agent being out of RAM so we upped it to 12GiB. Hopefully that didn't cause issues with the swap file size since I know Linux goes nuts over that. And just yesterday we got the error again:
Activity 'Backing up virtual machine disks' failed. Failed to complete the operation because the process ran out of RAM.
I do have "limit to 2 concurrent backups" on for each plan and I can limit it to 1 but we also have about 400GiB of unused RAM on on that cluster so we can assign whatever we want for that agent, if that's actually the problem. The documentation strongly suggests we wouldn't need more than 8GiB.
So can this error show up if the VM it's backing up doesn't have sufficient RAM? Or if the Windows VM that Acronis Cyber Protect it installed on is out of RAM? Also, does upping the RAM on the Acronis Agent VM actually work or is it dangerous to exceed the available space of the already set up swap partition? I'm not a knowledgeable Linux person but I know Windows can handle a mismatched page file size as long as you never run out of RAM or it's expandable but no idea how Linux handles it.

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Thanks for the great info! I may resort to only allowing one backup at a time but since we have 1006GiB of RAM on our host with 480 used, I'm upping the Agent's RAM allocation to the "you should never need the swap partition" amount of 24GB to see if that helps (and not touching the swap file size for now because it'd require resizing it virtually then attempting to resize the partition and I only know how to do that quickly in Windows). Also, it just always seems to happen on our File Server #3 which is truly enormous and only has 12GB of RAM so I'm tweaking that to be a lot higher tonight too. I think between the two, it ought to work. I'll keep you posted.
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CEC-P wrote:Thanks for the great info! I may resort to only allowing one backup at a time but since we have 1006GiB of RAM on our host with 480 used, I'm upping the Agent's RAM allocation to the "you should never need the swap partition" amount of 24GB to see if that helps (and not touching the swap file size for now because it'd require resizing it virtually then attempting to resize the partition and I only know how to do that quickly in Windows). Also, it just always seems to happen on our File Server #3 which is truly enormous and only has 12GB of RAM so I'm tweaking that to be a lot higher tonight too. I think between the two, it ought to work. I'll keep you posted.
Hello!
Thank you for the reply.
Feel free to update the thread, this may help the other users.
Best regards!
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