Veeam Agent for Microsoft Windows job displays warning: Partition exceeds disk layout

To correct the allocation issue, use the Windows OS built-in shrink tool to shrink the specified partition on the specified disk.

1. Open Disk Management (diskmgmt.msc).
   
   
2. Using the disk number and partition number values in the warning, identify which partition needs to be shrunk.
   In most cases, it's the last partition on the disk.
   
   Example: Warning Partition 2 exceeds disk 0 layout by 97923072 bytes

3. Right-click the identified partition and select Shrink Volume...

4. Next, you'll need to calculate the amount of space to shrink using the byte value listed in the warning.
   
   Remember: The value in the warning from Veeam is in bytes, and the shrink tool uses megabytes. As such, divide the value indicated in the warning by 1,048,576 (or 1024 twice), then round up the result to the nearest megabyte.
   
   Example: Warning Partition 2 exceeds disk 0 layout by 97923072 bytes
   
   97923072 bytes = 93.38671875 megabytes, rounded up is 94 megabytes

5. After the shrink operation is completed, re-run the backup job to verify the result.