MARS Agent Shadow Copy Storage Warnings

Question

I have recently updated my version Microsoft Azure Recovery Services agent to version 2.0.9243.0

Since then I have been getting the following errors/warnings:
You have used 95% of maximum disk space on C: allocated for shadow copy storage;

Backups appear to be successful

Shadow Copy Storage association
For volume: (C:)\?\Volume{a4d3d427-c650-431e-8ca1-f17ed13f8cc5}\
Shadow Copy Storage volume: (C:)\?\Volume{a4d3d427-c650-431e-8ca1-f17ed13f8cc5}\
Used Shadow Copy Storage space: 8.75 GB (3%)
Allocated Shadow Copy Storage space: 9.20 GB (3%)
Maximum Shadow Copy Storage space: 10.0 GB (3%)

I saw a similar post with an older version of mars:
https://learn.microsoft.com/en-us/answers/questions/592621/mars-agent-shadow-copy-storage-warnings.html

Is this still an issue?

Answer 1

Hello @Greg Phillips Thank you for reaching out to us and I apologize for the delayed response!

I understand that you have MARS agent backups running successfully. However, there are warnings "You have used 95% of maximum disk space on C: allocated for shadow copy storage;" post upgrade to the latest version.

• Ensure you have the latest backup agent installed. (You already have it)
• Ensure that the scratch volume has free space corresponding to 5-10 percentage of the backup data size. If required, switch to a new scratch location that meets the specified space requirements. To learn how to switch scratch locations, see article .
• If Windows Server Backup is also enabled with MARS backup, ensure there is extra 35 GB of space available in the scratch location in addition to above condition.

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