IBM XIV Storage System Copy Services and Migration

To perform the volume copy:1. Validate the configuration for your host. With VMware, ensure that the hard disk assignedto the virtual machine is a mapped raw LUN. For a disk directly attached to a server, theSAN boot must be enabled and the target server must have the XIV volume discovered.2. Shut down the source server or OS. If the source remains active, there might be data inmemory that is not synchronized to the disk. If this step is skipped, unexpected results canoccur.3. Perform volume copy from the source volume to the target volume.4. Power on the new system.A demonstration of the process is simple using VMware. Starting with the VMware resourcewindow, power off the virtual machines for both the source and the target. The summarydescribed in Figure 3-4 shows that both XIV Source VM (1), the source, and XIV Source VM(2), the target, are powered off.Figure 3-4 VMware virtual machine summaryLooking at the XIV Storage System before the copy (Figure 3-5), xiv_vmware_1 is mapped tothe XIV Source VM (1) in VMware and has utilized 1 GB of space. This information shows thatthe OS is installed and operational. The second volume, xiv_vmware_2, is the target volumefor the copy and is mapped to XIV Source VM (2) and is 0 in size. At this point, the OS has notbeen installed on the virtual machine and thus the OS is not usable.Figure 3-5 The XIV volumes before the copyBecause the virtual machines are powered off, simply initiate the copy process as justdescribed.Selecting xiv_vmware_1 as the source, copy the volume to the target xiv_vmware_2. Thecopy completes immediately and is available for usage.To verify that the copy is complete, the used area of the volumes must match, as shown inFigure 3-6.Figure 3-6 The XIV volumes after the copyChapter 3. Volume copy 69