6. Delete the old copy from the volume, as shown in Figure 6-52. 7. Ensure that the new copy is in the target storage pool, as shown in Figure 6-53. This migration process requires more user interaction, but it offers some benefits; for  example, if you migrate a volume from a tier 1 storage pool to a lower performance tier 2  storage pool. In step 1, you create the copy on the tier 2 pool. All reads are still performed in  the tier 1 pool to the primary copy. After the synchronization, all writes are destaged to both  pools, but the reads are still only done from the primary copy. 352  Implementing the IBM Storwize V5000 Gen2 with IBM Spectrum Virtualize V8.2.1 Figure 6-53 Verifying the new copy in the target storage pool Figure 6-52 Deleting the older copy