1. Amazon elastic compute cloud. http://aws.amazon.com/ec2/.
2. Benchmarking and stress testing an hadoop cluster with terasort, testDFSIO & co. http://www.michael-noll.com/blog/2011/04/09/benchmarking-and-stress-testing-an-hadoop-cluster-with-terasort-testdfsio-nnbench-mrbench/.
3. Google cloud platform - compute engine. https://cloud.google.com/compute/.
4. Hadoop cluster setup. http://hadoop.apache.org/docs/r1.2.1/cluster_setup.html.
5. Hadoop JIRA HDFS-941. https://issues.apache.org/jira/browse/HDFS-941.