Managed cloud services company Rackspace Inc. has revealed how it's using Splunk Inc.'s data analytics software to ensure its well-oiled business processes function smoothly. Rackspace, in fact, said it's also planning to adopt Splunk's machine learning tools in the near future. Rackspace described on Wednesday how its been using Splunk's Enterprise and Enterprise Security tools to power its decision analytics engine across its security, compliance, business intelligence, application management and information technology operations. Rackspace needs Splunk because it digests almost 3 terabytes of data per day. It analyzes that data to spot things like anomalous activity in its data centers and to repair any broken processes.