Important:  If you receive error message code  CMMVC6357E  while you are splitting a volume  copy, click the  Running Tasks  icon to view the synchronization status. Then, wait for the  copy to synchronize and repeat the splitting process. You can check whether the volume copies are identical and process the differences between  them if they are not. 8.5.3 Validate Volume Copies option To validate the copies of a mirrored volume, complete the following steps: 1. From the Actions menu, select  Validate Volume Copies , as shown in Figure 8-62. Figure 8-62 Actions menu: Validate Volume Copies 426  Implementing the IBM Storwize V5000 Gen2 with IBM Spectrum Virtualize V8.2.1