We are in the process of provisioning/automating Test Environments as a Service in the Mainframe Z/OS world. I am seeking solutions that will either save in the DASD/Database areas in addition to increasing the time to deliver a complete test environment. Z/OS already takes advantage of SMS/HSM hierachical storage and subsetting and masking our production data for test purposes is also being addressed. If anyone has any ideas in regards to tools, software, architecture appliances, please advise. Is distributed storage an area to pursue? 3390 DASD space vs. SATA???