diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,4 +1,14 @@
 fuel-plugin-bdd
 ===============
 
-Plugin description
+Disk-intensive workloads require the storage layer to be able to provide both
+high IOPS and sequential operations capabilities. Apache Hadoop is one of the
+most storage-sensitive frameworks which is widely used for Data Processing in
+production. Sahara service provides Hadoop installations on top of OpenStack.
+
+The best performance on the virtualized environment can be achieved by
+providing the direct access from a VM to a block device located on the same
+compute host. OpenStack Cinder service has such attachment option implemented
+in the BlockDeviceDriver.
+
+This plugin affords ability to use BlockDeviceDriver in Fuel.