Figure 3. Copy a volume to DRV
Step 3: Copy DRV to a new location The data on the DRVs is now copied to the new location. After the attributes of the original hypervolumes are swapped, SymmWin copies the tracks from the valid mirrors to the two new mirrors and then makes the original hypervolumes ready (Figure 4). This is similar to a BCV restore.
Figure 4. Copy DRVs to new locations
Step 4: DRVs are split The final step is to split the DRVs from their standard and mirror hypervolumes once synchronization is complete (Figure 5). The balance of the drives is improved, and the DRVs are now available for the next swap.
Figure 5. DRVs are split
Note: Swap of three mirror devices does not require a DRV.
RAID 5 swap steps
RAID 5 device swaps require a DRV. The DRV should be of the same size of the DATA portion of the RAID 5 device and should follow the same configuration rules as DRVs that are used to swap mirrored devices.
Step 1: Identify volumes to swap This is the same as for mirrored devices.
Step 2: Copy DATA of a volume to DRV This is the same as for mirrored devices, but only the DATA portion of the RAID 5 device is copied to the DRV. The parity data is not copied.
EMC Symmetrix Optimizer A Detailed Review