content_image/989217.jpg content_image/989218.jpg
6. Delete the old copy from the volume, as shown in Figure 6-52. 

<img src='content_image/989217.jpg'>

7. Ensure that the new copy is in the target storage pool, as shown in Figure 6-53. 

<img src='content_image/989218.jpg'>

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. 

