Couchbase data disk with AWS ebs volume

I am trying to use AWS EBS volume mapped to N: drive as couchbase data disk path in my windows server. However I get the below error when saving the settings,
Attention: Could not set the storage path. It must be a directory writable by ‘couchbase’ user.
I verified that I can write into the EBS share directory.
Any body has an idea on this?

Thanks
Ram