The critcal part of your exception message is.
Caused by: org.alfresco.deployment.impl.DeploymentException: Could not create me
tadata directory /deployment/depmetadata\default.md\\ROOT\anurag.
The mixed forward and backslashes in the directory name look very suspicious.
In the older versions of Alfresco (such as 2.1), there is a known issue about the use of absolute directories for naming the metadata folder. If you are trying to use an absolute path then experiment with using a relative path. If on Windows then experiment with using the \\ characters as the directory separator.
Other things to check are that the FSR has permissions to read and write to the filesystem and there is available disk space.
This should get you going but if not then
Could you confirm the version of Alfresco you are using, your OS. and post the contents of your deployment.properties file.