Replica inconsistent and insufficient disk space on BMR (Bare Metal Recovery) Backup

The problem is that sometimes the BMR backup "Bare Metal Recovery" is not working properly and fails with the message "Replica inconsistent" caused by "insufficient disk space".
Cause:
DPM 2010 does not calculate the size of BMR data source, but assumes 30 GB for all servers. Admins should change the value as per the size of BMR backups expected on their environments.

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BMR include or Exclude drives

The Bare Metal Recovery (BMR) option in DPM 2010 allows you to recover servers from an image file. BMR is actually an option build in to Windows 2008 (R2) which can be utilized by DPM 2010.

By default the BMR will protect the “critical system data” According to the Microsoft definition –> critical data =  System State and C drive and all other drivers that contain system data directories (Program files).

Check what is includes:

• logon to the protected server
• Open the Windows Server Backup Feature
• Select Action  - Backup ones

Select Different options

Select Custom

C
Click on Bare Metal Recover and check which other volumes are automatically selected.

Modify Drives included
Now you can choose to modify the BMR selection. This can be done by editing the file named Bmrbackup.cmd.