Windows Azure Storage Blob (WASB)?

Windows Azure Storage Blob (WASB) is an extension built on top of HADOOP Distributed File System (HDFS).

A variation of WASB named WASBS uses SSL certificates for better security.

HDFS is one of the Hadoop parts and is dedicated to management of data and storage.
When a file is loaded in Hadoop, the 'name node' uses HDFS to chunk the file into blocks and spread those blocks of data across the worker nodes within the Hadoop cluster.

In MS Azure, an Azure Blob store allows to store data using an Azure storage account, collections of data.


The difference with WASB is the data is loaded from storage accounts instead of local disks. Performance is often better than hd attached locally to the VMs.