IBM XIV Storage System Copy Services and Migration

5.5.3 Phase 3: recovery of the primary siteIn this phase the primary site is recovered and communication between the primary andsecondary sites is restored. We assume that it was not totally damaged and that the data atthe local site is still there (so we can do a resync). Data is being written from the standbyserver to the secondary XIV. At the primary site the original Windows 2008 production serveris now switched off, as illustrated in Figure 5-18.LocalSiteRemoteSiteProductionWindows 2008ServerDownActiveStandbyWindows 2008ServerFC LinkFC LinkData FlowMirroring InactiveFC LinkPrimaryXIVSecondaryXIVFigure 5-18 Primary site recoveryRole changeover at the primary site using the GUIWe are now going to change roles for the master volumes at the primary site and make themslave volumes. Before doing this, ensure that the original production server is shut down.1. On the primary XIV go to the Remote Mirroring menu. The synchronization status willprobably be inactive. Select one coupling (if you select several couplings, you cannotchange the role), right-click, and select Change Role, as shown in Figure 5-19.Figure 5-19 Change master volumes to slave volumes on the primary XIV142 IBM XIV Storage System: Copy Services and Migration