<p>This IBM® RedpapersTM publication is a guide to Copy Services as managed by AIX® in a IBM PowerVMTM virtualized environment. The goal of this paper is to provide step-by-step procedures about how storage subsystem-based Copy Services are accomplished in a virtualized environment and the approach for which they should be adopted.</p><p>This paper focuses on Copy Services technology from EMC, Hitachi, and IBM within the following storage subsystem models:<br>- EMC DMX-4<br>- Hitachi USP V<br>- IBM DS8300<br>- IBM SVC</p><p>The storage software products that will be used for the different Copy Services are as follows:<br>- EMC TimeFinder<br>- Hitachi ShadowImage<br>- IBM FlashCopy®</p><p>While there are numerous storage subsystem vendors in the marketplace and industry, this paper has been limited to the vendors and the technologies described above.</p>