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              [html]<thead><tr><td>System configuration backup : After backing up the system configuration, save the</td><td>backup data outside of the SAN. If you cannot access the BM Storwize V7000, you do not</td></tr></thead><tbody><tr><td>have access to the backup data if it is on the SAN.</td></tr><tr></tr></tbody>
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  For the purposes of remote data mirroring, two or more clustered systems (IBM Spectrum 
  Virtualize systems starting from software V7.1) must form a partnership before creating 
  relationships between mirrored volumes. 
  
  **Important:**IBM Storwize V7000 V6.3 introduced the**layer**parameter. It can be changed 
  by running**chsystem**by using the command-line interface (CLI). The default is the storage 
  layer. You must change it to replication if you need to set up a copy services relationship 
  between the IBM Storwize family and IBM SAN Volume Controller. 