IBM XIV Storage System Copy Services and Migration

Figure 5-28 Switch role to slave volume on the secondary XIV4. Go to the Remote Mirroring menu on the primary XIV and check the status of the coupling.It must show the peer volume as a master volume (Figure 5-29).Figure 5-29 Switch role to master volume on the primary XIV5. Reassign volumes back to the production server at the primary site and power it on again.Continue to work as normal. Figure 5-30 on page 148 shows that all the new data is nowback at the primary (local) site.Role switchover using the XCLITo switch over the role using the XCLI:1. At the secondary site, ensure that all the volumes for the standby server are synchronizedand shut down the servers.2. On the secondary XIV open an XCLI session and run the mirror_switch_roles command,as shown in Example 5-14.Example 5-14 Switch from master volume to slave volume on secondary XIV>> mirror_switch_roles vol=itso_win2008_vol2Command executed successfully.3. On the secondary XIV, to list the mirror coupling run the mirror_list command(Example 5-15).Example 5-15 Mirror statuses on the secondary XIV>> mirror_listName Mirror Type Mirror Object Role Remote System Remote Peer Active Status Link Upitso_win2008_vol1 sync_best_effort Volume Slave XIV MN00019 itso_win2008_vol1 yes Consistent yesitso_win2008_vol2 sync_best_effort Volume Slave XIV MN00019 itso_win2008_vol2 yes Consistent yesitso_win2008_vol3 sync_best_effort Volume Master XIV MN00019 itso_win2008_vol3 no Unsynchronized yes4. On the primary XIV run the mirror_list command to list the mirror couplings, as shownin Example 5-16.Example 5-16 Mirror statuses on the primary XIV>> mirror_listName Mirror Type Mirror Object Role Remote System Remote Peer Active Status Link Upitso_win2008_vol1 sync_best_effort Volume Master XIV MN00035 itso_win2008_vol1 yes Synchronized yesitso_win2008_vol2 sync_best_effort Volume Master XIV MN00035 itso_win2008_vol2 yes Synchronized yesitso_win2008_vol3 sync_best_effort Volume Master XIV MN00035 itso_win2008_vol3 no Unsynchronized yesChapter 5. Synchronous Remote Mirroring 147